The Gaels ( ; ; ; ) are an
Insular Celtic
Insular Celtic languages are the group of Celtic languages spoken in Brittany, Great Britain, Ireland, and the Isle of Man. All surviving Celtic languages are in the Insular group, including Breton, which is spoken on continental Europe in Br ...
ethnolinguistic group
An ethnolinguistic group (or ethno-linguistic group) is a group that is unified by both a common ethnicity and language. Most ethnic groups share a first language. However, "ethnolinguistic" is often used to emphasise that language is a major bas ...
native to
Ireland
Ireland (, ; ; Ulster Scots dialect, Ulster-Scots: ) is an island in the North Atlantic Ocean, in Northwestern Europe. Geopolitically, the island is divided between the Republic of Ireland (officially Names of the Irish state, named Irelan ...
,
Scotland
Scotland is a Countries of the United Kingdom, country that is part of the United Kingdom. It contains nearly one-third of the United Kingdom's land area, consisting of the northern part of the island of Great Britain and more than 790 adjac ...
, and the
Isle of Man
The Isle of Man ( , also ), or Mann ( ), is a self-governing British Crown Dependency in the Irish Sea, between Great Britain and Ireland. As head of state, Charles III holds the title Lord of Mann and is represented by a Lieutenant Govern ...
.
They are associated with the
Gaelic languages
The Goidelic ( ) or Gaelic languages (; ; ) form one of the two groups of Insular Celtic languages, the other being the Brittonic languages.
Goidelic languages historically formed a dialect continuum stretching from Ireland through the Isle o ...
: a branch of the
Celtic languages
The Celtic languages ( ) are a branch of the Indo-European language family, descended from the hypothetical Proto-Celtic language. The term "Celtic" was first used to describe this language group by Edward Lhuyd in 1707, following Paul-Yve ...
comprising
Irish,
Manx, and
Scottish Gaelic
Scottish Gaelic (, ; Endonym and exonym, endonym: ), also known as Scots Gaelic or simply Gaelic, is a Celtic language native to the Gaels of Scotland. As a member of the Goidelic language, Goidelic branch of Celtic, Scottish Gaelic, alongs ...
.
Gaelic language and culture originated in
Ireland
Ireland (, ; ; Ulster Scots dialect, Ulster-Scots: ) is an island in the North Atlantic Ocean, in Northwestern Europe. Geopolitically, the island is divided between the Republic of Ireland (officially Names of the Irish state, named Irelan ...
, extending to
Dál Riata
Dál Riata or Dál Riada (also Dalriada) () was a Gaels, Gaelic Monarchy, kingdom that encompassed the Inner Hebrides, western seaboard of Scotland and north-eastern Ireland, on each side of the North Channel (Great Britain and Ireland), North ...
in western
Scotland
Scotland is a Countries of the United Kingdom, country that is part of the United Kingdom. It contains nearly one-third of the United Kingdom's land area, consisting of the northern part of the island of Great Britain and more than 790 adjac ...
. In antiquity, the Gaels
traded with the Roman Empire and also
raided Roman Britain
Roman Britain was the territory that became the Roman province of ''Britannia'' after the Roman conquest of Britain, consisting of a large part of the island of Great Britain. The occupation lasted from AD 43 to AD 410.
Julius Caes ...
. In the Middle Ages, Gaelic culture became dominant throughout the rest of
Scotland
Scotland is a Countries of the United Kingdom, country that is part of the United Kingdom. It contains nearly one-third of the United Kingdom's land area, consisting of the northern part of the island of Great Britain and more than 790 adjac ...
and the
Isle of Man
The Isle of Man ( , also ), or Mann ( ), is a self-governing British Crown Dependency in the Irish Sea, between Great Britain and Ireland. As head of state, Charles III holds the title Lord of Mann and is represented by a Lieutenant Govern ...
. There was also some Gaelic settlement
in Wales, as well as cultural influence through
Celtic Christianity
Celtic Christianity is a form of Christianity that was common, or held to be common, across the Celtic languages, Celtic-speaking world during the Early Middle Ages. The term Celtic Church is deprecated by many historians as it implies a unifi ...
. In the
Viking Age
The Viking Age (about ) was the period during the Middle Ages when Norsemen known as Vikings undertook large-scale raiding, colonising, conquest, and trading throughout Europe and reached North America. The Viking Age applies not only to their ...
, small numbers of
Vikings raided and settled in Gaelic lands, becoming the
Norse-Gaels. In the 9th century, Dál Riata and
Pictland
The Picts were a group of peoples in what is now Scotland north of the Firth of Forth, in the Early Middle Ages. Where they lived and details of their culture can be gleaned from early medieval texts and Pictish stones. The name appears in ...
merged to form the Gaelic
Kingdom of Alba
The Kingdom of Alba (; ) was the Kingdom of Scotland between the deaths of Donald II in 900 and of Alexander III in 1286. The latter's death led indirectly to an invasion of Scotland by Edward I of England in 1296 and the First War of Scotti ...
. Meanwhile,
Gaelic Ireland
Gaelic Ireland () was the Gaelic political and social order, and associated culture, that existed in Ireland from the late Prehistory of Ireland, prehistoric era until the 17th century. It comprised the whole island before Anglo-Norman invasi ...
was made up of
several kingdoms, with a
High King
A high king is a king who holds a position of seniority over a group of other kings, without the title of emperor. Similar titles include great king and king of kings. The high kings of history usually ruled over lands of cultural unity; thus ...
often claiming lordship over them.
In the 12th century,
Anglo-Normans
The Anglo-Normans (, ) were the medieval ruling class in the Kingdom of England following the Norman Conquest. They were primarily a combination of Normans, Bretons, Flemings, French people, Frenchmen, Anglo-Saxons and Celtic Britons.
Afte ...
conquered
Conquest involves the annexation or control of another entity's territory through war or coercion. Historically, conquests occurred frequently in the international system, and there were limited normative or legal prohibitions against conquest ...
parts of Ireland, while parts of Scotland also
became Normanized. However, Gaelic culture remained strong throughout Ireland, and in Scotland in the
Highlands,
Hebrides
The Hebrides ( ; , ; ) are the largest archipelago in the United Kingdom, off the west coast of the Scotland, Scottish mainland. The islands fall into two main groups, based on their proximity to the mainland: the Inner Hebrides, Inner and Ou ...
, and
Galloway
Galloway ( ; ; ) is a region in southwestern Scotland comprising the counties of Scotland, historic counties of Wigtownshire and Kirkcudbrightshire. It is administered as part of the council areas of Scotland, council area of Dumfries and Gallow ...
. In the early 17th century, the last Gaelic kingdoms in Ireland fell under
English control.
James VI and I
James VI and I (James Charles Stuart; 19 June 1566 – 27 March 1625) was King of Scotland as James VI from 24 July 1567 and King of England and King of Ireland, Ireland as James I from the union of the Scottish and English crowns on 24 M ...
sought to subdue the Gaels and wipe out their culture;
first in the Scottish Highlands via repressive laws such as the
Statutes of Iona
The Statutes of Iona, passed in Scotland in 1609, required that Highland Scottish clan
A Scottish clan (from Scottish Gaelic , literally 'children', more broadly 'kindred') is a kinship group among the Scottish people. Clans give a sense of ...
, and then in Ireland by
colonizing Gaelic land with English and Scots-speaking Protestant settlers. In the following centuries Gaelic language was suppressed and mostly supplanted by English. However, it continues to be the main language in Ireland's and Scotland's (
Outer Hebrides
The Outer Hebrides ( ) or Western Isles ( , or ), sometimes known as the Long Isle or Long Island (), is an Archipelago, island chain off the west coast of mainland Scotland.
It is the longest archipelago in the British Isles. The islan ...
and pockets of the north-west
Highlands). The modern descendants of the Gaels have spread throughout the rest of the British Isles, the
Americas
The Americas, sometimes collectively called America, are a landmass comprising the totality of North America and South America.''Webster's New World College Dictionary'', 2010 by Wiley Publishing, Inc., Cleveland, Ohio. When viewed as a sing ...
and
Australasia
Australasia is a subregion of Oceania, comprising Australia, New Zealand (overlapping with Polynesia), and sometimes including New Guinea and surrounding islands (overlapping with Melanesia). The term is used in a number of different context ...
.
Traditional Gaelic society was organised into
clans
A clan is a group of people united by actual or perceived kinship
and descent. Even if lineage details are unknown, a clan may claim descent from a founding member or apical ancestor who serves as a symbol of the clan's unity. Many societie ...
, each with its own territory and king (or chief), elected through
tanistry
Tanistry is a Gaelic system for passing on titles and lands. In this system the Tanist (; ; ) is the office of heir-apparent, or second-in-command, among the (royal) Gaelic patrilineal dynasties of Ireland, Scotland and Mann, to succeed to ...
. The Irish were previously
pagans who had
many gods,
venerated
Veneration (; ), or veneration of saints, is the act of honoring a saint, a person who has been identified as having a high degree of sanctity or holiness. Angels are shown similar veneration in many religions. Veneration of saints is practiced, ...
their ancestors and believed in an
Otherworld
In historical Indo-European religion, the concept of an otherworld, also known as an otherside, is reconstructed in comparative mythology. Its name is a calque of ''orbis alius'' (Latin for "other world/side"), a term used by Lucan in his desc ...
. Their four yearly festivals –
Samhain
Samhain ( , , , ) or () is a Gaels, Gaelic festival on 1 November marking the end of the harvest season and beginning of winter or the "Celtic calendar#Medieval Irish and Welsh calendars, darker half" of the year.Dáithí Ó hÓgáin, Ó hÓ ...
,
Imbolc
Imbolc or Imbolg (), also called Saint Brigid's Day (; ; ), is a Gaels, Gaelic traditional festival on 1 February. It marks the beginning of Spring (season), spring, and in Christianity, it is the calendar of saints, feast day of Brigid of Kild ...
,
Beltane
Beltane () or ''Bealtaine'' () is the Gaels, Gaelic May Day festival, marking the beginning of summer. It is traditionally held on 1 May, or about midway between the March equinox, spring equinox and summer solstice. Historically, it was widely ...
and
Lughnasa – continued to be celebrated into modern times. The Gaels have a strong
oral tradition
Oral tradition, or oral lore, is a form of human communication in which knowledge, art, ideas and culture are received, preserved, and transmitted orally from one generation to another.Jan Vansina, Vansina, Jan: ''Oral Tradition as History'' (19 ...
, traditionally maintained by
shanachies.
Inscription
Epigraphy () is the study of inscriptions, or epigraphs, as writing; it is the science of identifying graphemes, clarifying their meanings, classifying their uses according to dates and cultural contexts, and drawing conclusions about the wr ...
in the
ogham
Ogham (also ogam and ogom, , Modern Irish: ; , later ) is an Early Medieval alphabet used primarily to write the early Irish language (in the "orthodox" inscriptions, 4th to 6th centuries AD), and later the Old Irish language ( scholastic ...
alphabet began in the 4th century. The Gaels' conversion to
Christianity
Christianity is an Abrahamic monotheistic religion, which states that Jesus in Christianity, Jesus is the Son of God (Christianity), Son of God and Resurrection of Jesus, rose from the dead after his Crucifixion of Jesus, crucifixion, whose ...
accompanied the introduction of writing in the Roman alphabet.
Irish mythology
Irish mythology is the body of myths indigenous to the island of Ireland. It was originally Oral tradition, passed down orally in the Prehistoric Ireland, prehistoric era. In the History of Ireland (795–1169), early medieval era, myths were ...
and
Brehon law
Early Irish law, also called Brehon law (from the old Irish word breithim meaning judge), comprised the statutes which governed everyday life in Early Medieval Ireland. They were partially eclipsed by the Norman invasion of 1169, but underwe ...
were preserved and recorded by medieval Irish monasteries. Gaelic monasteries were renowned centres of learning and played a key role in developing
Insular art
Insular art, also known as Hiberno-Saxon art, was produced in the sub-Roman Britain, post-Roman era of Great Britain and Ireland. The term derives from ''insula'', the Latin language, Latin term for "island"; in this period Britain and Ireland ...
; Gaelic missionaries and scholars were
highly influential in western Europe. In the Middle Ages, most Gaels lived in
roundhouses and
ringfort
Ringforts or ring forts are small circular fortification, fortified settlements built during the Bronze Age, Iron Age and early Middle Ages up to about the year 1000 AD. They are found in Northern Europe, especially in Ireland. There are ...
s. The Gaels long have had their own styles of dress;
that in Ireland was typified for centuries by the ('saffron shirt'), and
in Gaelic Scotland by the
belted plaid (precursor of the modern
kilt
A kilt ( ) is a garment resembling a wrap-around knee-length skirt, made of twill-woven worsted wool with heavy pleats at the sides and back and traditionally a tartan pattern. Originating in the Scottish Highland dress for men, it is first r ...
). Gaelic peoples have produced distinctive
music
Music is the arrangement of sound to create some combination of Musical form, form, harmony, melody, rhythm, or otherwise Musical expression, expressive content. Music is generally agreed to be a cultural universal that is present in all hum ...
,
dances
Dance is an The arts, art form, consisting of sequences of body movements with aesthetic and often Symbol, symbolic value, either improvised or purposefully selected. Dance can be categorized and described by its choreography, by its repertoir ...
,
festivals
A festival is an event celebrated by a community and centering on some characteristic aspect or aspects of that community and its religion or cultures. It is often marked as a local or national holiday, Melā, mela, or Muslim holidays, eid. A ...
, and sports (including the
Gaelic games
Gaelic games () are a set of sports played worldwide, though they are particularly popular in Ireland, where they originated. They include Gaelic football, hurling, Gaelic handball and rounders. Football and hurling, the most popular of the s ...
in Ireland and
Highland games in Scotland) into the modern era. Gaelic culture continues to be a major component of
Irish,
Scottish
Scottish usually refers to something of, from, or related to Scotland, including:
*Scottish Gaelic, a Celtic Goidelic language of the Indo-European language family native to Scotland
*Scottish English
*Scottish national identity, the Scottish ide ...
, and
Manx society.
Ethnonyms
Throughout the centuries, Gaels and Gaelic-speakers have been known by a number of names. The most consistent of these have been ''Gael'', ''
Irish'', and ''
Scots''. In
Latin
Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
, the Gaels were called , but this later came to mean only the Gaels of
Scotland
Scotland is a Countries of the United Kingdom, country that is part of the United Kingdom. It contains nearly one-third of the United Kingdom's land area, consisting of the northern part of the island of Great Britain and more than 790 adjac ...
. Other terms, such as ''
Milesian'', are not as often used.
An
Old Norse
Old Norse, also referred to as Old Nordic or Old Scandinavian, was a stage of development of North Germanic languages, North Germanic dialects before their final divergence into separate Nordic languages. Old Norse was spoken by inhabitants ...
name for the Gaels was ''
Vestmenn'' (meaning "Westmen", due to inhabiting the Western fringes of Europe). Informally, archetypal forenames such as ''
Tadhg
Tadhg, also Taḋg ( , ), (pronunciations given for the name ''Tadhg'' separately from those for the slang/pejorative ''Teague''.) commonly anglicized as Taig, "Taig" or "Teague", is an Irish language, Irish and Scottish Gaelic masculine name t ...
'' or ''
Dòmhnall'' are sometimes used for Gaels.
Gael
The word 'Gaelic' is first recorded in print in the
English language
English is a West Germanic language that developed in early medieval England and has since become a English as a lingua franca, global lingua franca. The namesake of the language is the Angles (tribe), Angles, one of the Germanic peoples th ...
in the 1770s,
replacing the earlier word which is attested as far back as 1596.
''Gael'', defined as a 'member of the Gaelic race', is first attested in print in 1810. In English, the more antiquarian term ''Goidels'' came to be used by some due to
Edward Lhuyd's work on the relationship between
Celtic languages
The Celtic languages ( ) are a branch of the Indo-European language family, descended from the hypothetical Proto-Celtic language. The term "Celtic" was first used to describe this language group by Edward Lhuyd in 1707, following Paul-Yve ...
. This term was further popularised in academia by
John Rhys
John is a common English name and surname:
* John (given name)
* John (surname)
John may also refer to:
New Testament
Works
* Gospel of John, a title often shortened to John
* First Epistle of John, often shortened to 1 John
* Second Ep ...
; the first Professor of Celtic at
Oxford University
The University of Oxford is a collegiate research university in Oxford, England. There is evidence of teaching as early as 1096, making it the oldest university in the English-speaking world and the second-oldest continuously operating u ...
; due to his work ''Celtic Britain'' (1882).
These names all come from the
Old Irish
Old Irish, also called Old Gaelic (, Ogham, Ogham script: ᚌᚑᚔᚇᚓᚂᚉ; ; ; or ), is the oldest form of the Goidelic languages, Goidelic/Gaelic language for which there are extensive written texts. It was used from 600 to 900. The ...
word . In
Early Modern Irish
Early Modern Irish () represented a transition between Middle Irish and Modern Irish. Its literary form, Classical Gaelic, was used in Ireland and Scotland from the 13th to the 18th century.
Classical Gaelic
Classical Gaelic or Classical Irish ( ...
, it was spelled (singular) and (plural). In modern Irish, it is spelled (singular) and (plural). According to scholar
John T. Koch, the Old Irish form of the name was borrowed from an
Archaic Welsh form , meaning 'forest people', 'wild men' or, later, 'warriors'. is recorded as a personal name in the ''
Book of Llandaff
The Book of Llandaff (; , ', or '), is the cartulary of the cathedral of Llandaff, a 12th-century compilation of documents relating to the history of the diocese of Llandaff in Wales. It is written primarily in Latin but also contains a signific ...
''. The root of the name is cognate at the
Proto-Celtic
Proto-Celtic, or Common Celtic, is the hypothetical ancestral proto-language of all known Celtic languages, and a descendant of Proto-Indo-European. It is not attested in writing but has been partly Linguistic reconstruction, reconstructed throu ...
level with Old Irish 'wild', and , derived ultimately from
Proto-Indo-European
Proto-Indo-European (PIE) is the reconstructed common ancestor of the Indo-European language family. No direct record of Proto-Indo-European exists; its proposed features have been derived by linguistic reconstruction from documented Indo-Euro ...
. This latter word is the origin of ''
Fianna
''Fianna'' ( , ; singular ''Fian''; ) were small warrior-hunter bands in Gaelic Ireland during the Iron Age and early Middle Ages. A ''fian'' was made up of freeborn young men, often from the Gaelic nobility of Ireland, "who had left fosterage ...
'' and ''
Fenian
The word ''Fenian'' () served as an umbrella term for the Irish Republican Brotherhood (IRB) and their affiliate in the United States, the Fenian Brotherhood. They were secret political organisations in the late 19th and early 20th centuries ...
''.
In medieval Ireland, the
bardic poets who were the cultural intelligentsia of the nation, limited the use of specifically to those who claimed genealogical descent from the mythical
Goídel Glas.
Even the
Gaelicised
Gaelicisation, or Gaelicization, is the act or process of making something Gaels, Gaelic or gaining characteristics of the ''Gaels'', a sub-branch of Celticisation. The Gaels are an ethno-linguistic group, traditionally viewed as having spread fro ...
Normans
The Normans (Norman language, Norman: ''Normaunds''; ; ) were a population arising in the medieval Duchy of Normandy from the intermingling between Norsemen, Norse Viking settlers and locals of West Francia. The Norse settlements in West Franc ...
who were born in Ireland, spoke Irish and sponsored Gaelic bardic poetry, such as
, were referred to as ('foreigner') by , a 14th-century
Chief Ollam of Ireland.
Irish
A common name, passed down to the modern day, is ''
Irish''; this existed in the English language during the 11th century in the form of , which derived from the stem of
Old English
Old English ( or , or ), or Anglo-Saxon, is the earliest recorded form of the English language, spoken in England and southern and eastern Scotland in the Early Middle Ages. It developed from the languages brought to Great Britain by Anglo-S ...
, 'inhabitant of Ireland', from
Old Norse
Old Norse, also referred to as Old Nordic or Old Scandinavian, was a stage of development of North Germanic languages, North Germanic dialects before their final divergence into separate Nordic languages. Old Norse was spoken by inhabitants ...
.
The ultimate origin of this word is thought to be the Old Irish , which is from
Old Celtic , likely associated with the Proto-Indo-European term meaning 'fertile'.
is mentioned as a goddess in the as a daughter of of the . Along with her sisters and , she is said to have made a deal with the
Milesians to name the island after her.
The
ancient Greeks
Ancient Greece () was a northeastern Mediterranean civilization, existing from the Greek Dark Ages of the 12th–9th centuries BC to the end of classical antiquity (), that comprised a loose collection of culturally and linguistically re ...
, in particular
Ptolemy
Claudius Ptolemy (; , ; ; – 160s/170s AD) was a Greco-Roman mathematician, astronomer, astrologer, geographer, and music theorist who wrote about a dozen scientific treatises, three of which were important to later Byzantine science, Byzant ...
in his second-century ''
Geographia
The ''Geography'' (, , "Geographical Guidance"), also known by its Latin names as the ' and the ', is a gazetteer, an atlas, and a treatise on cartography, compiling the geographical knowledge of the 2nd-century Roman Empire. Originally wri ...
'', possibly based on earlier sources, located a group known as the (from , ) in the south-west of Ireland.
This group has been associated with the of Irish tradition by
T. F. O'Rahilly and others.
The , claiming descent from a Milesian eponymous ancestor named , were the hegemonic power in Ireland before the rise of the descendants of
Conn of the Hundred Battles
Conn Cétchathach (), or Conn of the Hundred Battles, son of Fedlimid Rechtmar, was a legendary High King of Ireland who is claimed to be the ancestor of the Connachta, and through his descendant Niall Noígiallach, the Uí Néill dynasties, w ...
and . The included peoples such as the and .
Ancient Roman
In modern historiography, ancient Rome is the Roman people, Roman civilisation from the founding of Rome, founding of the Italian city of Rome in the 8th century BC to the Fall of the Western Roman Empire, collapse of the Western Roman Em ...
writers, such as
Caesar
Gaius Julius Caesar (12 or 13 July 100 BC – 15 March 44 BC) was a Roman general and statesman. A member of the First Triumvirate, Caesar led the Roman armies in the Gallic Wars before defeating his political rival Pompey in a civil war. He ...
,
Pliny, and
Tacitus
Publius Cornelius Tacitus, known simply as Tacitus ( , ; – ), was a Roman historian and politician. Tacitus is widely regarded as one of the greatest Roman historians by modern scholars.
Tacitus’ two major historical works, ''Annals'' ( ...
, derived from the name .
Thus the term ''Hibernian'' also comes from this root, although the Romans tended to call the isle , and the Gaels . Within Ireland itself, the term , 'Irish', only gained its modern political significance as a primary denominator from the 17th century onwards, as in the works of
Geoffrey Keating
Geoffrey Keating (; – ) was an Irish historian. He was born in County Tipperary, Ireland, and is buried in Tubrid Graveyard in the parish of Ballylooby-Duhill. He became a Catholic priest and a poet.
Biography
It was generally believed unt ...
, where a Catholic alliance between the native and , 'old foreigners' (of Norman descent), was proposed against the , 'new foreigners', or , 'English' (the ascendant Protestant
New English settlers).
Scots

The
Scots Gaels derive from the kingdom of , which included parts of western Scotland and northern Ireland. It has various explanations of its origins, including a
foundation myth of an invasion from Ireland. Other historians believe that the Gaels colonized parts of Western Scotland over several decades and some archaeological evidence may point to a pre-existing maritime province united by the sea and isolated from the rest of Scotland by the
Scottish Highlands
The Highlands (; , ) is a historical region of Scotland. Culturally, the Highlands and the Scottish Lowlands, Lowlands diverged from the Late Middle Ages into the modern period, when Scots language, Lowland Scots language replaced Scottish Gae ...
or ; however, this is disputed.
The genetic exchange includes passage of the M222 genotype within Scotland.
From the 5th to 10th centuries, early Scotland was home not only to the Gaels of Dál Riata but also the
Picts
The Picts were a group of peoples in what is now Scotland north of the Firth of Forth, in the Scotland in the early Middle Ages, Early Middle Ages. Where they lived and details of their culture can be gleaned from early medieval texts and Pic ...
, the
Britons,
Angles and lastly the
Vikings
Vikings were seafaring people originally from Scandinavia (present-day Denmark, Norway, and Sweden),
who from the late 8th to the late 11th centuries raided, pirated, traded, and settled throughout parts of Europe.Roesdahl, pp. 9� ...
. The Romans began to use the term ''
Scoti
''Scoti'' or ''Scotti'' is a Latin name for the Gaels,Duffy, Seán. ''Medieval Ireland: An Encyclopedia''. Routledge, 2005. p.698 first attested in the late 3rd century. It originally referred to all Gaels, first those in Ireland and then those ...
'' to describe the Gaels in Latin from the 4th century onward.
At the time, the Gaels were raiding the west coast of Britain, and they took part in the
Great Conspiracy
The Great Conspiracy was a year-long state of war and disorder that occurred near the end of Roman Britain. Fourth-century Roman historian Ammianus Marcellinus describes it as a ('barbarian conspiracy') which took advantage of a depleted milit ...
; it is thus conjectured that the term means "raider, pirate". Although the Dál Riata settled in Argyll in the 6th century, the term "Scots" did not just apply to them, but to Gaels in general. Examples can be taken from
Johannes Scotus Eriugena
John Scotus Eriugena, also known as Johannes Scotus Erigena, John the Scot or John the Irish-born ( – c. 877), was an Irish Neoplatonist philosopher, theologian and poet of the Early Middle Ages. Bertrand Russell dubbed him "the most ...
and other figures from
Hiberno-Latin
Hiberno-Latin was a learned style of literary Latin first used and subsequently spread by Irish monks during the period from the sixth century to the twelfth century.
Vocabulary and influence
Hiberno-Latin was notable for its curiously learn ...
culture and the ''
Schottenkloster'' founded by Irish Gaels in Germanic lands.
The Gaels of northern Britain referred to themselves as ''
Albannaich'' in their own tongue and their realm as the
Kingdom of Alba
The Kingdom of Alba (; ) was the Kingdom of Scotland between the deaths of Donald II in 900 and of Alexander III in 1286. The latter's death led indirectly to an invasion of Scotland by Edward I of England in 1296 and the First War of Scotti ...
(founded as a successor kingdom to Dál Riata and Pictland). Germanic groups tended to refer to the Gaels as ''Scottas''
and so when Anglo-Saxon influence grew at court with
Duncan II, the Latin ''Rex Scottorum'' began to be used and the realm was known as Scotland; this process and cultural shift was put into full effect under
David I David I may refer to:
* David I, Caucasian Albanian Catholicos c. 399
* David I of Armenia, Catholicos of Armenia (728–741)
* David I Kuropalates of Georgia (died 881)
* David I Anhoghin, king of Lori (ruled 989–1048)
* David I of Scotland ...
, who let the Normans come to power and furthered the Lowland-Highland divide. Germanic-speakers in Scotland spoke a language called ''
Inglis'', which they started to call ''Scottis'' (
Scots) in the 16th century, while they in turn began to refer to Scottish Gaelic as ''Erse'' (meaning "Irish").
Population
Kinship groups

In traditional Gaelic society, a patrilineal kinship group is referred to as a ''
clan
A clan is a group of people united by actual or perceived kinship
and descent. Even if lineage details are unknown, a clan may claim descent from a founding member or apical ancestor who serves as a symbol of the clan's unity. Many societie ...
n''
or, in Ireland, a ''fine.''
Both in technical use signify a dynastic grouping descended from a common ancestor, much larger than a personal family, which may also consist of various kindreds and
septs. (''Fine'' is not to be confused with the term ''
fian'', a 'band of roving men whose principal occupations were hunting and war, also a troop of professional fighting-men under a leader; in wider sense a company, number of persons; a warrior (late and rare)'
).
Using the Munster-based
Eóganachta
The Eóganachta (Modern , ) were an Irish dynasty centred on Rock of Cashel, Cashel which dominated southern Ireland (namely the Kingdom of Munster) from the 6/7th to the 10th centuries, and following that, in a restricted form, the Kingdom of De ...
as an example, members of this ''clann'' claim patrilineal descent from
Éogan Mór
In Irish traditional history Éogan (or Eoghan Mór—a name also used by his grandfather, Mug Nuadat), eldest son of Ailill Ollamh, was a 2nd or 3rd century AD king of Munster. He ruled for either fifteen or seventeen years, though fifteen i ...
. It is further divided into major kindreds, such as the
Eóganacht Chaisil
Eóganacht Chaisil were a branch of the Eóganachta, the ruling dynasty of Munster between the 5th and 10th centuries. They took their name from Cashel (County Tipperary) which was the capital of the early Catholic kingdom of Munster. They were de ...
,
Glendamnach,
Áine, Locha Léin and Raithlind. These kindreds themselves contain septs that have passed down as
Irish Gaelic surnames, for example the Eóganacht Chaisil includes O'Callaghan, MacCarthy, O'Sullivan and others.
The Irish Gaels can be grouped into the following major historical groups;
Connachta
The Connachta are a group of medieval Irish dynasty, dynasties who claimed descent from the legendary High King of Ireland, High King Conn of the Hundred Battles, Conn Cétchathach (Conn of the Hundred Battles). The modern western Provinces of ...
(including
Uí Néill
The Uí Néill (; meaning "descendants of Niall") are Irish dynasties that claim descent from Niall Noígíallach (Niall of the Nine Hostages), a historical King of Tara who is believed to have died around c. 405. They are generally divided ...
,
Clan Colla,
Uí Maine, etc.),
Dál gCais
The Dalcassians ( ) are a Gaels, Gaelic Irish clan, generally accepted by contemporary scholarship as being a branch of the Déisi Muman, that became very powerful in Ireland during the 10th century. Their genealogies claimed descent from Tál ...
,
Eóganachta
The Eóganachta (Modern , ) were an Irish dynasty centred on Rock of Cashel, Cashel which dominated southern Ireland (namely the Kingdom of Munster) from the 6/7th to the 10th centuries, and following that, in a restricted form, the Kingdom of De ...
,
Érainn
The Iverni (, ') were a people of early Ireland first mentioned in Ptolemy's 2nd century ''Geography'' as living in the extreme south-west of the island. He also locates a "city" called Ivernis (, ') in their territory, and observes that this se ...
(including
Dál Riata
Dál Riata or Dál Riada (also Dalriada) () was a Gaels, Gaelic Monarchy, kingdom that encompassed the Inner Hebrides, western seaboard of Scotland and north-eastern Ireland, on each side of the North Channel (Great Britain and Ireland), North ...
,
Dál Fiatach
Dál Fiatach was a Gaelic Ireland, Gaelic dynastic-grouping and the name of their territory in the north-east of Ireland, which lasted throughout the Middle Ages until their demise in the 13th century at the hands of Normans in Ireland, Normans ...
, etc.),
Laigin
The Laigin, modern spelling Laighin (), were a Gaelic population group of early Ireland. They gave their name to the Kingdom of Leinster, which in the medieval era was known in Irish as ''Cóiced Laigen'', meaning "Fifth/province of the Leinste ...
and
Ulaid
(Old Irish, ) or (Irish language, Modern Irish, ) was a Gaelic Ireland, Gaelic Provinces of Ireland, over-kingdom in north-eastern Ireland during the Middle Ages made up of a confederation of dynastic groups. Alternative names include , which ...
(including
Dál nAraidi
Dál nAraidi (; "Araide's part") or Dál Araide, sometimes List of Latinised names, latinised as Dalaradia or Anglicisation, anglicised as Dalaray,Boyd, Hugh AlexanderIrish Dalriada ''The Glynns: Journal of The Glens of Antrim Historical Societ ...
). In the Highlands, the various Gaelic-originated clans tended to claim descent from one of the Irish groups, particularly those from
Ulster
Ulster (; or ; or ''Ulster'') is one of the four traditional or historic provinces of Ireland, Irish provinces. It is made up of nine Counties of Ireland, counties: six of these constitute Northern Ireland (a part of the United Kingdom); t ...
. The
Dál Riata
Dál Riata or Dál Riada (also Dalriada) () was a Gaels, Gaelic Monarchy, kingdom that encompassed the Inner Hebrides, western seaboard of Scotland and north-eastern Ireland, on each side of the North Channel (Great Britain and Ireland), North ...
(i.e. – MacGregor, MacDuff, MacLaren, etc.) claimed descent from
Síl Conairi, for instance. Some arrivals in the High Middle Ages (i.e. – MacNeill, Buchanan, Munro, etc.) claimed to be of the Uí Néill. As part of their self-justification; taking over power from the
Norse-Gael MacLeod in the Hebrides; the
MacDonalds claimed to be from Clan Colla.
For the Irish Gaels, their culture did not survive the conquests and colonisations by the English between 1534 and 1692 (see
History of Ireland (1536–1691),
Tudor conquest of Ireland
Ireland was conquered by the Tudor monarchs of England in the 16th century. The Anglo-Normans had Anglo-Norman invasion of Ireland, conquered swathes of Ireland in the late 12th century, bringing it under Lordship of Ireland, English rule. In t ...
,
Plantations of Ireland
Plantation (settlement or colony), Plantations in 16th- and 17th-century Ireland () involved the confiscation of Irish-owned land by the Kingdom of England, English The Crown, Crown and the colonisation of this land with settlers from Great Br ...
,
Cromwellian conquest of Ireland
The Cromwellian conquest of Ireland (1649–1653) was the re-conquest of Ireland by the Commonwealth of England, initially led by Oliver Cromwell. It forms part of the 1641 to 1652 Irish Confederate Wars, and wider 1639 to 1653 Wars of the Three ...
,
Williamite War in Ireland
The Williamite War in Ireland took place from March 1689 to October 1691. Fought between Jacobitism, Jacobite supporters of James II of England, James II and those of his successor, William III of England, William III, it resulted in a Williamit ...
. As a result of the
Gaelic revival
The Gaelic revival () was the late-nineteenth-century national revival of interest in the Irish language (also known as Gaelic) and Irish Gaelic culture (including folklore, mythology, sports, music, arts, etc.). Irish had diminished as a sp ...
, there has been renewed interest in
Irish genealogy
Irish genealogy is the study of individuals and families who originated on the island of Ireland.
Origins
Genealogy was cultivated since at least the start of the early Irish historic era. Upon inauguration, Bards and poets are believed to ha ...
; the
Irish Government
The Government of Ireland () is the executive authority of Ireland, headed by the , the head of government. The government – also known as the cabinet – is composed of ministers, each of whom must be a member of the , which consists of ...
recognised Gaelic
Chiefs of the Name since the 1940s. The ''
Finte na hÉireann'' (Clans of Ireland) was founded in 1989 to gather together clan associations; individual clan associations operate throughout the world and produce journals for their septs. The Highland clans held out until the 18th century
Jacobite risings
Jacobitism was a political ideology advocating the restoration of the senior line of the House of Stuart to the Monarchy of the United Kingdom, British throne. When James II of England chose exile after the November 1688 Glorious Revolution, ...
. During the Victorian-era, symbolic tartans, crests and badges were retroactively applied to clans. Clan associations built up over time and ''
Na Fineachan Gàidhealach'' (The Highland Clans) was founded in 2013.
Human genetics

At the turn of the 21st century, the principles of
human genetics
Human genetics is the study of inheritance as it occurs in Human, human beings. Human genetics encompasses a variety of overlapping fields including: classical genetics, cytogenetics, molecular genetics, biochemical genetics, genomics, populatio ...
and
genetic genealogy
Genetic genealogy is the use of genealogical DNA tests, i.e., DNA profiling and DNA testing, in combination with traditional genealogical methods, to infer genetic relationships between individuals. This application of genetics came to be use ...
were applied to the study of populations of
Irish origin. The two other peoples who recorded higher than 85% for R1b in a 2009 study published in the scientific journal,
PLOS Biology
''PLOS Biology'' is a monthly peer-reviewed scientific journal covering all aspects of biology. Publication began on October 13, 2003. It is the first journal published by the Public Library of Science. The editor-in-chief is Nonia Pariente.
In ...
, were the
Welsh and the
Basques
The Basques ( or ; ; ; ) are a Southwestern European ethnic group, characterised by the Basque language, a Basque culture, common culture and shared genetic ancestry to the ancient Vascones and Aquitanians. Basques are indigenous peoples, ...
.
The development of in-depth studies of DNA sequences known as
STRs and
SNPs
In genetics and bioinformatics, a single-nucleotide polymorphism (SNP ; plural SNPs ) is a germline substitution of a single nucleotide at a specific position in the genome. Although certain definitions require the substitution to be present in ...
have allowed geneticists to associate subclades with specific Gaelic kindred groupings (and their surnames), vindicating significant elements of
Gaelic genealogy, as found in works such as the ''
Leabhar na nGenealach
''Leabhar na nGenealach'' ("Book of Genealogies") is a massive genealogical collection written mainly in the years 1649 to 1650, at the college-house of St. Nicholas' Collegiate Church, Galway, by Dubhaltach MacFhirbhisigh. He continued to add m ...
''. Examples can be taken from the
Uí Néill
The Uí Néill (; meaning "descendants of Niall") are Irish dynasties that claim descent from Niall Noígíallach (Niall of the Nine Hostages), a historical King of Tara who is believed to have died around c. 405. They are generally divided ...
(i.e. – O'Neill, O'Donnell, Gallagher, etc.), who are associated with R-M222 and the
Dál gCais
The Dalcassians ( ) are a Gaels, Gaelic Irish clan, generally accepted by contemporary scholarship as being a branch of the Déisi Muman, that became very powerful in Ireland during the 10th century. Their genealogies claimed descent from Tál ...
(i.e. – O'Brien, McMahon, Kennedy, etc.) who are associated with R-L226. With regard to Gaelic genetic genealogy studies, these developments in subclades have aided people in finding their original clan group in the case of a
non-paternity event
In genetics, a non-paternity event (also known as misattributed paternity, not parent expected, or NPE) occurs when an individual's presumed father is not in fact their biological father. This is a type of misattributed parentage experience (MPE) ...
, with
Family Tree DNA
FamilyTreeDNA is a division of Gene by Gene, a commercial genetic testing company based in Houston, Texas. FamilyTreeDNA offers analysis of autosomal DNA, Y-DNA, and mitochondrial DNA to individuals for genealogical purpose. With a database ...
having the largest such database at present.
In 2016, a study analyzing
ancient DNA
Ancient DNA (aDNA) is DNA isolated from ancient sources (typically Biological specimen, specimens, but also environmental DNA). Due to degradation processes (including Crosslinking of DNA, cross-linking, deamination and DNA fragmentation, fragme ...
found
Bronze Age
The Bronze Age () was a historical period characterised principally by the use of bronze tools and the development of complex urban societies, as well as the adoption of writing in some areas. The Bronze Age is the middle principal period of ...
remains from
Rathlin Island
Rathlin Island (, ; Local Irish dialect: ''Reachraidh'', ; Scots: ''Racherie'') is an island and civil parish off the coast of County Antrim (of which it is part) in Northern Ireland. It is Northern Ireland's northernmost point. As of the 2021 ...
in Ireland to be most genetically similar to the modern indigenous populations of Ireland, Scotland and Wales, and to a lesser degree that of England. The majority of the genomes of the
insular Celts
The Insular Celts were speakers of the Insular Celtic languages in the British Isles and Brittany. The term is mostly used for the Celtic peoples of the isles up until the early Middle Ages, covering the British– Irish Iron Age, Roman Britai ...
would therefore have emerged by 4,000 years ago. It was also suggested that the arrival of
proto-Celtic
Proto-Celtic, or Common Celtic, is the hypothetical ancestral proto-language of all known Celtic languages, and a descendant of Proto-Indo-European. It is not attested in writing but has been partly Linguistic reconstruction, reconstructed throu ...
language, possibly ancestral to
Gaelic languages
The Goidelic ( ) or Gaelic languages (; ; ) form one of the two groups of Insular Celtic languages, the other being the Brittonic languages.
Goidelic languages historically formed a dialect continuum stretching from Ireland through the Isle o ...
, may have occurred around this time.
[Neolithic and Bronze Age migration to Ireland and establishment of the insular Atlantic genome](_blank)
"Three Bronze Age individuals from Rathlin Island (2026–1534 cal BC), including one high coverage (10.5×) genome, showed substantial Steppe genetic heritage indicating that the European population upheavals of the third millennium manifested all of the way from southern Siberia to the western ocean. This turnover invites the possibility of accompanying introduction of Indo-European, perhaps early Celtic, language. Irish Bronze Age haplotypic similarity is strongest within modern Irish, Scottish, and Welsh populations, and several important genetic variants that today show maximal or very high frequencies in Ireland appear at this horizon. These include those coding for lactase persistence, blue eye color, Y chromosome R1b haplotypes, and the hemochromatosis C282Y allele; to our knowledge, the first detection of a known Mendelian disease variant in prehistory. These findings together suggest the establishment of central attributes of the Irish genome 4,000 y ago." Several genetic traits found at maximum or very high frequencies in the modern populations of Gaelic ancestry were also observed in the Bronze Age period. These traits include a hereditary disease known as
HFE hereditary haemochromatosis
Hereditary haemochromatosis type 1 (HFE-related haemochromatosis) is a genetic disorder characterized by excessive intestinal absorption of dietary iron, resulting in a pathological increase in total body iron stores. Humans, like most animals, ...
,
Y-DNA
The Y chromosome is one of two sex chromosomes in therian mammals and other organisms. Along with the X chromosome, it is part of the XY sex-determination system, in which the Y is the sex-determining chromosome because the presence of the Y ...
Haplogroup R-M269,
lactase persistence
Lactase persistence or lactose tolerance is the continued activity of the lactase enzyme in adulthood, allowing the digestion of lactose in milk. In most mammals, the activity of the enzyme is dramatically reduced after weaning. In some human pop ...
and
blue eyes.
Another trait very common in Gaelic populations is
red hair
Red hair, also known as ginger hair, is a human hair color found in 2–6% of people of northern Europe, Northern or Northwestern European ancestry and lesser frequency in other populations. It is most common in individuals Zygosity#Homozy ...
, with 10% of Irish and at least 13% of Scots having red hair, much larger numbers being carriers of variants of the
MC1R gene, and which is possibly related to an adaptation to the cloudy conditions of the regional climate.
Demographics
In countries where Gaels live, census records documenting population statistics exist. The following chart shows the number of speakers of the
Gaelic languages
The Goidelic ( ) or Gaelic languages (; ; ) form one of the two groups of Insular Celtic languages, the other being the Brittonic languages.
Goidelic languages historically formed a dialect continuum stretching from Ireland through the Isle o ...
(Irish, Scottish Gaelic, or Manx). The question of
ethnic identity is slightly more complex, but included below are those who identify as ethnic
Irish,
Manx or
Scottish
Scottish usually refers to something of, from, or related to Scotland, including:
*Scottish Gaelic, a Celtic Goidelic language of the Indo-European language family native to Scotland
*Scottish English
*Scottish national identity, the Scottish ide ...
. It should be taken into account that not all are of Gaelic descent, especially in the case of Scotland, due to the nature of the
Lowlands. It also depends on the self-reported response of the individual and so is a rough guide rather than an exact science.
The two comparatively "major" Gaelic nations in the modern era are Ireland (which had 71,968 "daily" Irish speakers and 1,873,997 people claiming "some ability of Irish", as of the
2022 census)
and Scotland (58,552 fluent "Gaelic speakers" and 92,400 with "some Gaelic language ability" in the 2001 census). Communities where the languages still are spoken natively are restricted largely to the west coast of each country and especially the
Hebrides
The Hebrides ( ; , ; ) are the largest archipelago in the United Kingdom, off the west coast of the Scotland, Scottish mainland. The islands fall into two main groups, based on their proximity to the mainland: the Inner Hebrides, Inner and Ou ...
islands in Scotland. However, a large proportion of the Gaelic-speaking population now lives in the cities of
Glasgow
Glasgow is the Cities of Scotland, most populous city in Scotland, located on the banks of the River Clyde in Strathclyde, west central Scotland. It is the List of cities in the United Kingdom, third-most-populous city in the United Kingdom ...
and
Edinburgh
Edinburgh is the capital city of Scotland and one of its 32 Council areas of Scotland, council areas. The city is located in southeast Scotland and is bounded to the north by the Firth of Forth and to the south by the Pentland Hills. Edinburgh ...
in Scotland, and
Dublin
Dublin is the capital and largest city of Republic of Ireland, Ireland. Situated on Dublin Bay at the mouth of the River Liffey, it is in the Provinces of Ireland, province of Leinster, and is bordered on the south by the Dublin Mountains, pa ...
,
Cork as well as Counties
Donegal and
Galway
Galway ( ; , ) is a City status in Ireland, city in (and the county town of) County Galway. It lies on the River Corrib between Lough Corrib and Galway Bay. It is the most populous settlement in the province of Connacht, the List of settleme ...
in Ireland. There are about 2,000 Scottish Gaelic speakers in Canada (
Canadian Gaelic
Canadian Gaelic or Cape Breton Gaelic (, or ), often known in Canadian English simply as Gaelic, is a collective term for the dialects of Scottish Gaelic spoken in Atlantic Canada.
Scottish Gaels were settled in Nova Scotia from 1773, with the ...
dialect), although many are elderly and concentrated in
Nova Scotia
Nova Scotia is a Provinces and territories of Canada, province of Canada, located on its east coast. It is one of the three Maritime Canada, Maritime provinces and Population of Canada by province and territory, most populous province in Atlan ...
and more specifically
Cape Breton Island
Cape Breton Island (, formerly '; or '; ) is a rugged and irregularly shaped island on the Atlantic coast of North America and part of the province of Nova Scotia, Canada.
The island accounts for 18.7% of Nova Scotia's total area. Although ...
. According to the U.S. Census in 2000,
there are more than 25,000 Irish-speakers in the United States, with the majority found in urban areas with large Irish-American communities such as
Boston
Boston is the capital and most populous city in the Commonwealth (U.S. state), Commonwealth of Massachusetts in the United States. The city serves as the cultural and Financial centre, financial center of New England, a region of the Northeas ...
, New York City and Chicago.
Diaspora

As the Western Roman Empire began to collapse, the Irish (along with the Anglo-Saxons) were one of the peoples able to take advantage in
Great Britain
Great Britain is an island in the North Atlantic Ocean off the north-west coast of continental Europe, consisting of the countries England, Scotland, and Wales. With an area of , it is the largest of the British Isles, the List of European ...
from the 4th century onwards. The proto-Eóganachta
Uí Liatháin
The Uí Liatháin () were an early kingdom of Munster in southern Ireland. They belonged the same kindred as the Uí Fidgenti, and the two are considered together in the earliest sources, for example '' The Expulsion of the Déisi'' (incidental ...
and the
Déisi Muman of
Dyfed
Dyfed () is a preserved county in southwestern Wales, covering the modern counties Carmarthenshire, Ceredigion and Pembrokeshire. It is mostly rural area with a coastline on the Irish Sea and the Bristol Channel. Between 1974 and 1996, Dyfed w ...
both established colonies in today's
Wales
Wales ( ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by the Irish Sea to the north and west, England to the England–Wales border, east, the Bristol Channel to the south, and the Celtic ...
. Further to the north, the Érainn's Dál Riata colonised
Argyll
Argyll (; archaically Argyle; , ), sometimes called Argyllshire, is a Shires of Scotland, historic county and registration county of western Scotland. The county ceased to be used for local government purposes in 1975 and most of the area ...
(eventually founding
Alba
''Alba'' ( , ) is the Scottish Gaelic name for Scotland. It is also, in English-language historiography, used to refer to the polity of Picts and Scots united in the ninth century as the Kingdom of Alba, until it developed into the Kingd ...
) and there was a significant Gaelic influence in
Northumbria
Northumbria () was an early medieval Heptarchy, kingdom in what is now Northern England and Scottish Lowlands, South Scotland.
The name derives from the Old English meaning "the people or province north of the Humber", as opposed to the Sout ...
and the
MacAngus clan arose to the Pictish kingship by the 8th century. Gaelic
Christian missionaries
A Christian mission is an organized effort to carry on evangelism, in the name of the Christian faith. Missions involve sending individuals and groups across boundaries, most commonly geographical boundaries. Sometimes individuals are sent and ...
were also active across the
Frankish Empire
The Carolingian Empire (800–887) was a Frankish-dominated empire in Western and Central Europe during the Early Middle Ages. It was ruled by the Carolingian dynasty, which had ruled as kings of the Franks since 751 and as kings of the Lomba ...
. With the coming of the
Viking Age
The Viking Age (about ) was the period during the Middle Ages when Norsemen known as Vikings undertook large-scale raiding, colonising, conquest, and trading throughout Europe and reached North America. The Viking Age applies not only to their ...
and their slave markets, Irish were also dispersed in this way across the realms under Viking control; as a legacy, in genetic studies,
Icelanders
Icelanders () are an ethnic group and nation who are native to the island country of Iceland. They speak Icelandic, a North Germanic language.
Icelanders established the country of Iceland in mid 930 CE when the (parliament) met for th ...
exhibit high levels of Gaelic-derived
mDNA.
Since the fall of Gaelic polities, the Gaels have made their way across parts of the world, successively under the auspices of the
Spanish Empire
The Spanish Empire, sometimes referred to as the Hispanic Monarchy (political entity), Hispanic Monarchy or the Catholic Monarchy, was a colonial empire that existed between 1492 and 1976. In conjunction with the Portuguese Empire, it ushered ...
,
French Empire, and the
British Empire
The British Empire comprised the dominions, Crown colony, colonies, protectorates, League of Nations mandate, mandates, and other Dependent territory, territories ruled or administered by the United Kingdom and its predecessor states. It bega ...
. Their main destinations were Iberia, France, the West Indies, North America (what is today the United States and Canada) and
Oceania
Oceania ( , ) is a region, geographical region including Australasia, Melanesia, Micronesia, and Polynesia. Outside of the English-speaking world, Oceania is generally considered a continent, while Mainland Australia is regarded as its co ...
(Australia and New Zealand). There has also been a mass "internal migration" within Ireland and Britain from the 19th century, with Irish and Scots migrating to the English-speaking industrial cities of
London
London is the Capital city, capital and List of urban areas in the United Kingdom, largest city of both England and the United Kingdom, with a population of in . London metropolitan area, Its wider metropolitan area is the largest in Wester ...
,
Dublin
Dublin is the capital and largest city of Republic of Ireland, Ireland. Situated on Dublin Bay at the mouth of the River Liffey, it is in the Provinces of Ireland, province of Leinster, and is bordered on the south by the Dublin Mountains, pa ...
,
Glasgow
Glasgow is the Cities of Scotland, most populous city in Scotland, located on the banks of the River Clyde in Strathclyde, west central Scotland. It is the List of cities in the United Kingdom, third-most-populous city in the United Kingdom ...
,
Liverpool
Liverpool is a port City status in the United Kingdom, city and metropolitan borough in Merseyside, England. It is situated on the eastern side of the River Mersey, Mersey Estuary, near the Irish Sea, north-west of London. With a population ...
,
Manchester
Manchester () is a city and the metropolitan borough of Greater Manchester, England. It had an estimated population of in . Greater Manchester is the third-most populous metropolitan area in the United Kingdom, with a population of 2.92&nbs ...
,
Birmingham
Birmingham ( ) is a City status in the United Kingdom, city and metropolitan borough in the metropolitan county of West Midlands (county), West Midlands, within the wider West Midlands (region), West Midlands region, in England. It is the Lis ...
,
Cardiff
Cardiff (; ) is the capital city, capital and List of urban areas in the United Kingdom, largest city of Wales. Cardiff had a population of in and forms a Principal areas of Wales, principal area officially known as the City and County of Ca ...
,
Leeds
Leeds is a city in West Yorkshire, England. It is the largest settlement in Yorkshire and the administrative centre of the City of Leeds Metropolitan Borough, which is the second most populous district in the United Kingdom. It is built aro ...
,
Edinburgh
Edinburgh is the capital city of Scotland and one of its 32 Council areas of Scotland, council areas. The city is located in southeast Scotland and is bounded to the north by the Firth of Forth and to the south by the Pentland Hills. Edinburgh ...
and others. Many underwent a linguistic "Anglicisation" and eventually merged with Anglo populations.
In a more narrow interpretation of the term ''Gaelic diaspora'', it could be interpreted as referring to the
Gaelic-speaking minority among the
Irish,
Scottish
Scottish usually refers to something of, from, or related to Scotland, including:
*Scottish Gaelic, a Celtic Goidelic language of the Indo-European language family native to Scotland
*Scottish English
*Scottish national identity, the Scottish ide ...
, and
Manx diaspora. However, the use of the term "diaspora" in relation to the Gaelic languages (i.e., in a narrowly linguistic rather than a more broadly cultural context) is arguably not appropriate, as it may suggest that Gaelic speakers and people interested in Gaelic necessarily have Gaelic ancestry, or that people with such ancestry naturally have an interest or fluency in their ancestral language. Research shows that this assumption is inaccurate.
History
Origin legends
In their own
national epic
A national epic is an epic poem or a literary work of epic scope which seeks to or is believed to capture and express the essence or spirit of a particular nation—not necessarily a nation state, but at least an ethnic or linguistic group wi ...
contained within medieval works such as the ''
Lebor Gabála Érenn
''Lebor Gabála Érenn'' (literally "The Book of Ireland's Taking"; Modern Irish spelling: ''Leabhar Gabhála Éireann'', known in English as ''The Book of Invasions'') is a collection of poems and prose narratives in the Irish language inten ...
'', the Gaels trace the origin of their people to an eponymous ancestor named
Goídel Glas. He is described as a
Scythian
The Scythians ( or ) or Scyths (, but note Scytho- () in composition) and sometimes also referred to as the Pontic Scythians, were an ancient Eastern Iranian equestrian nomadic people who had migrated during the 9th to 8th centuries BC fr ...
prince (the grandson of
Fénius Farsaid), who is credited with creating the
Gaelic languages
The Goidelic ( ) or Gaelic languages (; ; ) form one of the two groups of Insular Celtic languages, the other being the Brittonic languages.
Goidelic languages historically formed a dialect continuum stretching from Ireland through the Isle o ...
. Goídel's mother is called
Scota, described as an Egyptian princess. The Gaels are depicted as wandering from place to place for hundreds of years; they spend time in
Egypt
Egypt ( , ), officially the Arab Republic of Egypt, is a country spanning the Northeast Africa, northeast corner of Africa and Western Asia, southwest corner of Asia via the Sinai Peninsula. It is bordered by the Mediterranean Sea to northe ...
,
Crete
Crete ( ; , Modern Greek, Modern: , Ancient Greek, Ancient: ) is the largest and most populous of the Greek islands, the List of islands by area, 88th largest island in the world and the List of islands in the Mediterranean#By area, fifth la ...
,
Scythia
Scythia (, ) or Scythica (, ) was a geographic region defined in the ancient Graeco-Roman world that encompassed the Pontic steppe. It was inhabited by Scythians, an ancient Eastern Iranian equestrian nomadic people.
Etymology
The names ...
, the
Caspian Sea
The Caspian Sea is the world's largest inland body of water, described as the List of lakes by area, world's largest lake and usually referred to as a full-fledged sea. An endorheic basin, it lies between Europe and Asia: east of the Caucasus, ...
and
Getulia, before arriving in
Iberia
The Iberian Peninsula ( ), also known as Iberia, is a peninsula in south-western Europe. Mostly separated from the rest of the European landmass by the Pyrenees, it includes the territories of peninsular Spain and Continental Portugal, compri ...
, where their king,
Breogán
Breogán (also spelt Breoghan, Bregon or Breachdan) is a character in the ''Lebor Gabála Érenn'', a medieval Christian history of Ireland and the Irish (or Gaels). He is supposedly the son of Brath, and is described as an ancestor of the Gae ...
, is said to have founded
Galicia.
The Gaels are then said to have sailed to Ireland via Galicia in the form of the
Milesians, sons of
Míl Espáine
In Irish origin myths, Míl Espáine or Míl Espáne (later Latinization of names, Latinized as Milesius) is the mythical ancestor of the final inhabitants of Ireland, the "sons of Míl" or Milesians (Irish), Milesians, who represent the vast maj ...
.
The Gaels fight a battle of sorcery with the
Tuatha Dé Danann
The Tuatha Dé Danann (, meaning "the folk of the goddess Danu"), also known by the earlier name Tuath Dé ("tribe of the gods"), are a supernatural race in Irish mythology. Many of them are thought to represent deities of pre-Christian Gaelic ...
, the gods, who inhabited the land at the time.
Ériu
In Irish mythology, Ériu (; ), daughter of Delbáeth and Ernmas of the Tuatha Dé Danann, was the eponymous matron goddess of Ireland.
The English name for Ireland comes from the name Ériu and the Germanic languages, Germanic (Old Norse or ...
, a goddess of the land, promises the Gaels that land shall be theirs so long as they pay tribute to her. They agree, and their bard
Amergin recites an incantation known as the ''Song of Amergin''. The two groups agree to divide the land between them: the Gaels take the world above, while the Tuath Dé Danann take the world below (i.e. the
Otherworld
In historical Indo-European religion, the concept of an otherworld, also known as an otherside, is reconstructed in comparative mythology. Its name is a calque of ''orbis alius'' (Latin for "other world/side"), a term used by Lucan in his desc ...
). The Gaels call the land ''Éire,'' in honour of ''Éirú,'' which is later anglicised as '
''Eirelonde''
', '
''Eireland''
' and thereafter Ireland''
'.
Ancient

There is some disagreement about when
Celtic
Celtic, Celtics or Keltic may refer to:
Language and ethnicity
*pertaining to Celts, a collection of Indo-European peoples in Europe and Anatolia
**Celts (modern)
*Celtic languages
**Proto-Celtic language
*Celtic music
*Celtic nations
Sports Foot ...
speakers first arrived in Ireland. It is thought by some scholars to be associated with the
Bell Beaker people of the
Bronze Age
The Bronze Age () was a historical period characterised principally by the use of bronze tools and the development of complex urban societies, as well as the adoption of writing in some areas. The Bronze Age is the middle principal period of ...
, however others argue that "Celts" arrived much later at the beginning of the
Iron Age
The Iron Age () is the final epoch of the three historical Metal Ages, after the Chalcolithic and Bronze Age. It has also been considered as the final age of the three-age division starting with prehistory (before recorded history) and progre ...
.
During the
Iron Age
The Iron Age () is the final epoch of the three historical Metal Ages, after the Chalcolithic and Bronze Age. It has also been considered as the final age of the three-age division starting with prehistory (before recorded history) and progre ...
, there was heightened activity at a number of important
royal ceremonial sites, including
Tara,
Dún Ailinne,
Rathcroghan
Rathcroghan () is a complex of archaeological sites near Tulsk in County Roscommon, Ireland. It is identified as the site of Cruachan, the traditional capital of the Connachta, the prehistoric and early historic rulers of the western territory ...
and
Emain Macha
Navan Fort ( ; ) is an ancient ceremonial monument near Armagh, Northern Ireland. According to tradition it was one of the great royal sites of pre-Christian Gaelic Ireland and the capital of the Ulaidh. It is a large circular hilltop enclos ...
. Each was associated with a Gaelic tribe. The most important was Tara, where the High King (also known as the
King of Tara
The term Kingship of Tara () was a title of authority in ancient Ireland - the title is closely associated with the archaeological complex at the Hill of Tara. The position was considered to be of eminent authority in medieval Irish literature ...
) was inaugurated on the ''
Lia Fáil
The () or (; "Stone of Fál") is a stone at the Inauguration Mound () on the Hill of Tara in County Meath, Ireland, which served as the coronation stone for the King of Tara and hence High King of Ireland. It is also known as the Stone of D ...
'' (Stone of Destiny), which stands to this day.
According to medieval Irish legend, High King
Túathal Techtmar was exiled to
Roman Britain
Roman Britain was the territory that became the Roman province of ''Britannia'' after the Roman conquest of Britain, consisting of a large part of the island of Great Britain. The occupation lasted from AD 43 to AD 410.
Julius Caes ...
before returning to claim Tara. Based on the accounts of
Tacitus
Publius Cornelius Tacitus, known simply as Tacitus ( , ; – ), was a Roman historian and politician. Tacitus is widely regarded as one of the greatest Roman historians by modern scholars.
Tacitus’ two major historical works, ''Annals'' ( ...
, some modern historians associate him with an "Irish prince" said to have been entertained by
Agricola
Agricola, the Latin word for farmer, may also refer to:
People Cognomen or given name
:''In chronological order''
* Gnaeus Julius Agricola (40–93), Roman governor of Britannia (AD 77–85)
* Sextus Calpurnius Agricola, Roman governor of the m ...
, Governor of Britain, and speculate at Roman sponsorship. His grandson,
Conn Cétchathach
Conn Cétchathach (), or Conn of the Hundred Battles, son of Fedlimid Rechtmar, was a legendary High King of Ireland who is claimed to be the ancestor of the Connachta, and through his descendant Niall Noígiallach, the Uí Néill dynasties, w ...
, is the ancestor of the
Connachta
The Connachta are a group of medieval Irish dynasty, dynasties who claimed descent from the legendary High King of Ireland, High King Conn of the Hundred Battles, Conn Cétchathach (Conn of the Hundred Battles). The modern western Provinces of ...
who would dominate the Irish Middle Ages. They gained control of what would now be named Connacht. Their close relatives the
Érainn
The Iverni (, ') were a people of early Ireland first mentioned in Ptolemy's 2nd century ''Geography'' as living in the extreme south-west of the island. He also locates a "city" called Ivernis (, ') in their territory, and observes that this se ...
(both groups descend from
Óengus Tuirmech Temrach
Óengus Tuirmech Temrach, son of Eochaid Ailtlethan, was, according to medieval Irish legend and historical tradition, a High King of Ireland. He came to power after killing his predecessor, and his father's killer, Fergus Fortamail. His sons inc ...
) and the Ulaid would later lose out to them in Ulster, as the descendants of the
Three Collas
The Three Collas (Modern Irish: ''Trí Cholla'') were, according to medieval Irish legend and historical tradition, the fourth-century sons of Eochaid Doimlén, son of Cairbre Lifechair. Their names were: Cairell Colla Uais; Muiredach Colla Fo Chr ...
in
Airgíalla
Airgíalla (; Modern Irish: Oirialla, English: Oriel, Latin: ''Ergallia'') was a medieval Irish over-kingdom and the collective name for the confederation of tribes that formed it. The confederation consisted of nine minor kingdoms, all indepen ...
and
Niall Noígíallach in
Ailech extended their hegemony.
The Gaels emerged into the clear historical record during the classical era, with
ogham inscriptions
Ogham (also ogam and ogom, , Modern Irish: ; , later ) is an Early Medieval alphabet used primarily to write the early Irish language (in the "orthodox" inscriptions, 4th to 6th centuries AD), and later the Old Irish language ( scholastic ...
and quite detailed references in
Greco-Roman
The Greco-Roman world , also Greco-Roman civilization, Greco-Roman culture or Greco-Latin culture (spelled Græco-Roman or Graeco-Roman in British English), as understood by modern scholars and writers, includes the geographical regions and co ...
ethnography (most notably by
Ptolemy
Claudius Ptolemy (; , ; ; – 160s/170s AD) was a Greco-Roman mathematician, astronomer, astrologer, geographer, and music theorist who wrote about a dozen scientific treatises, three of which were important to later Byzantine science, Byzant ...
). The
Roman Empire
The Roman Empire ruled the Mediterranean and much of Europe, Western Asia and North Africa. The Roman people, Romans conquered most of this during the Roman Republic, Republic, and it was ruled by emperors following Octavian's assumption of ...
conquered most of Britain in the 1st century, but did not conquer Ireland or the far north of Britain. The Gaels had
relations with the Roman world, mostly through trade. Roman jewellery and coins have been found at several Irish royal sites, for example.
Gaels, known to the Romans as ''
Scoti
''Scoti'' or ''Scotti'' is a Latin name for the Gaels,Duffy, Seán. ''Medieval Ireland: An Encyclopedia''. Routledge, 2005. p.698 first attested in the late 3rd century. It originally referred to all Gaels, first those in Ireland and then those ...
'', also carried out raids on
Roman Britain
Roman Britain was the territory that became the Roman province of ''Britannia'' after the Roman conquest of Britain, consisting of a large part of the island of Great Britain. The occupation lasted from AD 43 to AD 410.
Julius Caes ...
, together with the
Picts
The Picts were a group of peoples in what is now Scotland north of the Firth of Forth, in the Scotland in the early Middle Ages, Early Middle Ages. Where they lived and details of their culture can be gleaned from early medieval texts and Pic ...
. These raids increased in the 4th century, as
Roman rule in Britain began to collapse.
This era was also marked by a Gaelic presence in Britain; in what is today Wales, the
Déisi
The ''Déisi'' were a social class in Ireland between the ancient and early medieval period. The various peoples listed under the heading ''déis'' shared a similar status in Gaelic Ireland, and had little or no actual kinship, though they were ...
founded the
Kingdom of Dyfed
The Kingdom of Dyfed (), one of several Welsh petty kingdoms that emerged in 5th-century sub-Roman Britain in southwest Wales, was based on the former territory of the Demetae (modern Welsh ''Dyfed''). The royal line was founded by Irish ...
and the
Uí Liatháin
The Uí Liatháin () were an early kingdom of Munster in southern Ireland. They belonged the same kindred as the Uí Fidgenti, and the two are considered together in the earliest sources, for example '' The Expulsion of the Déisi'' (incidental ...
founded
Brycheiniog
Brycheiniog was an independent kingdom in South Wales in the Early Middle Ages. It often acted as a buffer state between England to the east and the south Welsh kingdom of Deheubarth to the west. It was conquered and pacified by the Normans ...
. There was also some Irish settlement in
Cornwall
Cornwall (; or ) is a Ceremonial counties of England, ceremonial county in South West England. It is also one of the Celtic nations and the homeland of the Cornish people. The county is bordered by the Atlantic Ocean to the north and west, ...
.
To the north, the
Dál Riata
Dál Riata or Dál Riada (also Dalriada) () was a Gaels, Gaelic Monarchy, kingdom that encompassed the Inner Hebrides, western seaboard of Scotland and north-eastern Ireland, on each side of the North Channel (Great Britain and Ireland), North ...
are held to have established a territory in
Argyll
Argyll (; archaically Argyle; , ), sometimes called Argyllshire, is a Shires of Scotland, historic county and registration county of western Scotland. The county ceased to be used for local government purposes in 1975 and most of the area ...
and the
Hebrides
The Hebrides ( ; , ; ) are the largest archipelago in the United Kingdom, off the west coast of the Scotland, Scottish mainland. The islands fall into two main groups, based on their proximity to the mainland: the Inner Hebrides, Inner and Ou ...
.
Medieval
Christianity
Christianity is an Abrahamic monotheistic religion, which states that Jesus in Christianity, Jesus is the Son of God (Christianity), Son of God and Resurrection of Jesus, rose from the dead after his Crucifixion of Jesus, crucifixion, whose ...
reached Ireland during the 5th century, most famously through a
Romano-British
The Romano-British culture arose in Britain under the Roman Empire following the Roman conquest in AD 43 and the creation of the province of Britannia. It arose as a fusion of the imported Roman culture with that of the indigenous Britons, ...
slave
Patrick,
but also through Gaels such as
Declán,
Finnian and the
Twelve Apostles of Ireland
The Twelve Apostles of Ireland (also known as Twelve Apostles of Erin, ) were twelve early Irish monastic saints of the sixth century who studied under St Finnian (d. 549) at his famous monastic school Clonard Abbey at Cluain-Eraird (Erard's ...
. The abbot and the monk eventually took over certain cultural roles of the ''
aos dána'' (not least the roles of ''
druí
A druid was a member of the high-ranking Priestly caste, priestly class in ancient Celts, Celtic cultures. The druids were religious leaders as well as legal authorities, adjudicators, Folklore, lorekeepers, medical professionals and political ...
'' and ''
seanchaí'') as the oral culture of the Gaels was transmitted to script by the arrival of literacy. Thus
Christianity in Ireland
Christianity has been the largest religion in Ireland since the 5th century. After a Celtic paganism, pagan past of Ancient history, Antiquity, missionaries (most famously including Saint Patrick) converted the Irish tribes to Christianity i ...
during this early time retained elements of
Gaelic culture.
In the Middle Ages,
Gaelic Ireland
Gaelic Ireland () was the Gaelic political and social order, and associated culture, that existed in Ireland from the late Prehistory of Ireland, prehistoric era until the 17th century. It comprised the whole island before Anglo-Norman invasi ...
was divided into a hierarchy of territories ruled by a hierarchy of kings or chiefs. The smallest territory was the ''
túath
''Túath'' (plural ''túatha'') is the Old Irish term for the basic political and jurisdictional unit of Gaelic Ireland. ''Túath'' can refer to both a geographical territory as well the people who lived in that territory. The smallest ''túath ...
'' (plural: ''túatha''), which was typically the territory of a single kin-group. Several ''túatha'' formed a ''mór túath'' (overkingdom), which was ruled by an overking. Several overkingdoms formed a ''cóiced'' (province), which was ruled by a provincial king. In the early Middle Ages the ''túath'' was the main political unit, but during the following centuries the overkings and provincial kings became ever more powerful. By the 6th century, the division of Ireland into two spheres of influence (
Leath Cuinn and Leath Moga
(Conn's Half) and (Mug's half) are legendary ancient divisions of Ireland, respectively north and south of a line corresponding to the Esker Riada running east–west from Dublin Bay to Galway Bay. The eponymous Conn and Mug were Conn Cétchath ...
) was largely a reality. In the south, the influence of the
Eóganachta
The Eóganachta (Modern , ) were an Irish dynasty centred on Rock of Cashel, Cashel which dominated southern Ireland (namely the Kingdom of Munster) from the 6/7th to the 10th centuries, and following that, in a restricted form, the Kingdom of De ...
based at
Cashel
Cashel (an Anglicised form of the Irish language word ''Caiseal'', meaning "stone fort") may refer to:
Places in Ireland
*Cashel, County Tipperary
**The Rock of Cashel, an ancient, hilltop fortress complex for which Cashel is named
** Archbishop ...
grew further, to the detriment of Érainn clans such as the
Corcu Loígde
The Corcu Loígde (Corcu Lóegde, Corco Luigde, Corca Laoighdhe, Laidhe), meaning Gens of the Calf Goddess, also called the Síl Lugdach meic Itha, were a kingdom centred in West County Cork who descended from the proto-historical rulers of M ...
and
Clann Conla. Through their vassals the
Déisi
The ''Déisi'' were a social class in Ireland between the ancient and early medieval period. The various peoples listed under the heading ''déis'' shared a similar status in Gaelic Ireland, and had little or no actual kinship, though they were ...
(descended from
Fiacha Suidhe and later known as the
Dál gCais
The Dalcassians ( ) are a Gaels, Gaelic Irish clan, generally accepted by contemporary scholarship as being a branch of the Déisi Muman, that became very powerful in Ireland during the 10th century. Their genealogies claimed descent from Tál ...
), Munster was extended north of the
River Shannon
The River Shannon ( or archaic ') is the major river on the island of Ireland, and at in length, is the longest river in the British Isles. It drains the Shannon River Basin, which has an area of , – approximately one fifth of the area of I ...
, laying the foundations for
Thomond. Aside from their gains in Ulster (excluding the Érainn's
Ulaid
(Old Irish, ) or (Irish language, Modern Irish, ) was a Gaelic Ireland, Gaelic Provinces of Ireland, over-kingdom in north-eastern Ireland during the Middle Ages made up of a confederation of dynastic groups. Alternative names include , which ...
), the
Uí Néill
The Uí Néill (; meaning "descendants of Niall") are Irish dynasties that claim descent from Niall Noígíallach (Niall of the Nine Hostages), a historical King of Tara who is believed to have died around c. 405. They are generally divided ...
's southern branch had also pushed down into
Mide and
Brega
Brega , also known as ''Mersa Brega'' or ''Marsa al-Brega'' ( , i.e. "Brega Seaport"), is a complex of several smaller towns, industry installations and education establishments situated in Libya on the Gulf of Sidra, the most southerly point of ...
. By the 9th century, some of the most powerful kings were being acknowledged as
High King of Ireland
High King of Ireland ( ) was a royal title in Gaelic Ireland held by those who had, or who are claimed to have had, lordship over all of Ireland. The title was held by historical kings and was later sometimes assigned anachronously or to leg ...
.

Some, particularly champions of Christianity, hold the 6th to 9th centuries to be a
Golden Age
The term Golden Age comes from Greek mythology, particularly the ''Works and Days'' of Hesiod, and is part of the description of temporal decline of the state of peoples through five Ages of Man, Ages, Gold being the first and the one during wh ...
for the Gaels. This is due to the influence which the Gaels had across
Western Europe
Western Europe is the western region of Europe. The region's extent varies depending on context.
The concept of "the West" appeared in Europe in juxtaposition to "the East" and originally applied to the Western half of the ancient Mediterranean ...
as part of their
Christian missionary activities. Similar to the
Desert Fathers
The Desert Fathers were early Christian hermits and ascetics, who lived primarily in the Wadi El Natrun, then known as ''Skete'', in Roman Egypt, beginning around the Christianity in the ante-Nicene period, third century. The ''Sayings of the Dese ...
, Gaelic monastics were known for their
asceticism
Asceticism is a lifestyle characterized by abstinence from worldly pleasures through self-discipline, self-imposed poverty, and simple living, often for the purpose of pursuing Spirituality, spiritual goals. Ascetics may withdraw from the world ...
.
Some of the most celebrated figures of this time were
Columba
Columba () or Colmcille (7 December 521 – 9 June 597 AD) was an Irish abbot and missionary evangelist credited with spreading Christianity in what is today Scotland at the start of the Hiberno-Scottish mission. He founded the important abbey ...
,
Aidan,
Columbanus
Saint Columbanus (; 543 – 23 November 615) was an Irish missionary notable for founding a number of monasteries after 590 in the Frankish and Lombard kingdoms, most notably Luxeuil Abbey in present-day France and Bobbio Abbey in presen ...
and others.
Learned in
Greek
Greek may refer to:
Anything of, from, or related to Greece, a country in Southern Europe:
*Greeks, an ethnic group
*Greek language, a branch of the Indo-European language family
**Proto-Greek language, the assumed last common ancestor of all kno ...
and
Latin
Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
during an age of cultural collapse, the Gaelic scholars were able to gain a presence at the court of the
Carolingian
The Carolingian dynasty ( ; known variously as the Carlovingians, Carolingus, Carolings, Karolinger or Karlings) was a Frankish noble family named after Charles Martel and his grandson Charlemagne, descendants of the Arnulfing and Pippinid c ...
Frankish Empire
The Carolingian Empire (800–887) was a Frankish-dominated empire in Western and Central Europe during the Early Middle Ages. It was ruled by the Carolingian dynasty, which had ruled as kings of the Franks since 751 and as kings of the Lomba ...
; perhaps the best known example is
Johannes Scotus Eriugena
John Scotus Eriugena, also known as Johannes Scotus Erigena, John the Scot or John the Irish-born ( – c. 877), was an Irish Neoplatonist philosopher, theologian and poet of the Early Middle Ages. Bertrand Russell dubbed him "the most ...
. Aside from their activities abroad,
insular art
Insular art, also known as Hiberno-Saxon art, was produced in the sub-Roman Britain, post-Roman era of Great Britain and Ireland. The term derives from ''insula'', the Latin language, Latin term for "island"; in this period Britain and Ireland ...
flourished domestically, with artifacts such as the
Book of Kells
The Book of Kells (; ; Dublin, Trinity College Library, MS A. I. 8 sometimes known as the Book of Columba) is an illustrated manuscript and Celts, Celtic Gospel book in Latin, containing the Gospel, four Gospels of the New Testament togeth ...
and
Tara Brooch
The Tara Brooch is an Irish Celtic brooch, dated to the late 7th or early 8th century. It is of the pseudo-penannular type (with a fully closed head or hoop), and made from bronze, silver and gold. Its head consists of an intricately decorated ...
surviving.
Clonmacnoise
Clonmacnoise or Clonmacnois (Irish language, Irish: ''Cluain Mhic Nóis'') is a ruined monastery in County Offaly in Republic of Ireland, Ireland on the River Shannon south of Athlone, founded in 544 by Saint Ciarán of Clonmacnoise, Ciarán, ...
,
Glendalough
Glendalough (; ) is a glacial valley in County Wicklow, Ireland, renowned for an Early Medieval monastic settlement founded in the 6th century by St Kevin. From 1825 to 1957, the head of the Glendalough Valley was the site of a galena lead min ...
,
Clonard,
Durrow and
Inis Cathaigh are some of the more prominent Ireland-based monasteries founded during this time.
There is some evidence in early
Icelandic sagas
The sagas of Icelanders (, ), also known as family sagas, are a subgenre, or text group, of Icelandic sagas. They are prose narratives primarily based on historical events that mostly took place in Iceland in the ninth, tenth, and early elev ...
such as the ''
Íslendingabók
(, , ; ) is a historical work dealing with early history of Iceland, Icelandic history. The author was an Icelandic priest, Ari Þorgilsson, working in the early 12th century. The work originally existed in two different versions but only the y ...
'' that the Gaels may have visited the
Faroe Islands
The Faroe Islands ( ) (alt. the Faroes) are an archipelago in the North Atlantic Ocean and an autonomous territory of the Danish Realm, Kingdom of Denmark. Located between Iceland, Norway, and the United Kingdom, the islands have a populat ...
and
Iceland
Iceland is a Nordic countries, Nordic island country between the Atlantic Ocean, North Atlantic and Arctic Oceans, on the Mid-Atlantic Ridge between North America and Europe. It is culturally and politically linked with Europe and is the regi ...
before the
Norse, and that Gaelic monks known as ''
papar
The ''Papar'' (; from Latin , via Old Irish, meaning "father" or "pope") were Irish monks who took eremitic residence in parts of Iceland before that island's habitation by the Norsemen of Scandinavia. Their existence is attested by the early ...
'' (meaning father) lived there before being driven out by the incoming Norsemen.
The late 8th century heralded outside involvement in Gaelic affairs, as Norsemen from
Scandinavia
Scandinavia is a subregion#Europe, subregion of northern Europe, with strong historical, cultural, and linguistic ties between its constituent peoples. ''Scandinavia'' most commonly refers to Denmark, Norway, and Sweden. It can sometimes also ...
, known as the
Vikings
Vikings were seafaring people originally from Scandinavia (present-day Denmark, Norway, and Sweden),
who from the late 8th to the late 11th centuries raided, pirated, traded, and settled throughout parts of Europe.Roesdahl, pp. 9� ...
, began to raid and pillage settlements. The earliest recorded raids were on
Rathlin and
Iona
Iona (; , sometimes simply ''Ì'') is an island in the Inner Hebrides, off the Ross of Mull on the western coast of Scotland. It is mainly known for Iona Abbey, though there are other buildings on the island. Iona Abbey was a centre of Gaeli ...
in 795; these hit and run attacks continued for some time until the Norsemen began to settle in the 840s at
Dublin
Dublin is the capital and largest city of Republic of Ireland, Ireland. Situated on Dublin Bay at the mouth of the River Liffey, it is in the Provinces of Ireland, province of Leinster, and is bordered on the south by the Dublin Mountains, pa ...
(setting up a large slave market),
Limerick
Limerick ( ; ) is a city in western Ireland, in County Limerick. It is in the Provinces of Ireland, province of Munster and is in the Mid-West Region, Ireland, Mid-West which comprises part of the Southern Region, Ireland, Southern Region. W ...
,
Waterford
Waterford ( ) is a City status in Ireland, city in County Waterford in the South-East Region, Ireland, south-east of Ireland. It is located within the Provinces of Ireland, province of Munster. The city is situated at the head of Waterford H ...
and elsewhere. The Norsemen also took most of the Hebrides and the
Isle of Man
The Isle of Man ( , also ), or Mann ( ), is a self-governing British Crown Dependency in the Irish Sea, between Great Britain and Ireland. As head of state, Charles III holds the title Lord of Mann and is represented by a Lieutenant Govern ...
from the Dál Riata clans and established the Kingdom of the Isles.
The monarchy of
Pictland
The Picts were a group of peoples in what is now Scotland north of the Firth of Forth, in the Early Middle Ages. Where they lived and details of their culture can be gleaned from early medieval texts and Pictish stones. The name appears in ...
had kings of Gaelic origin, since the 7th century with Bruide mac Der-Ilei, around the times of the ''Cáin Adomnáin''. However, Pictland remained a separate realm from Dál Riata, until the latter gained full hegemony during the reign of Kenneth MacAlpin from the House of Alpin, whereby Dál Riata and Pictland were merged to form the
Kingdom of Alba
The Kingdom of Alba (; ) was the Kingdom of Scotland between the deaths of Donald II in 900 and of Alexander III in 1286. The latter's death led indirectly to an invasion of Scotland by Edward I of England in 1296 and the First War of Scotti ...
. This meant an acceleration of Gaelicisation in the northern part of Great Britain. The Battle of Brunanburh in 937 defined the Anglo-Saxon Kingdom of England as the hegemonic force in Great Britain, over a Gaelic-Viking alliance.
After a spell when the Norsemen were driven from Dublin by Leinsterman Cerball mac Muirecáin, they returned in the reign of Niall Glúndub, heralding a second Viking period. The Dublin Norse—some of them, such as Uí Ímair king Ragnall ua Ímair now partly Gaelicised as the
Norse-Gaels—were a serious regional power, with territories across
Northumbria
Northumbria () was an early medieval Heptarchy, kingdom in what is now Northern England and Scottish Lowlands, South Scotland.
The name derives from the Old English meaning "the people or province north of the Humber", as opposed to the Sout ...
and Scandinavian York, York. At the same time, the Uí Néill branches were involved in an internal power struggle for hegemony between the northern or southern branches. Donnchad Donn raided Munster and took Cellachán Caisil of the Eóganachta hostage. The destabilisation led to the rise of the Dál gCais and Brian Bóruma. Through military might, Brian went about building a Gaelic Imperium under his High Kingship, even gaining the submission of Máel Sechnaill mac Domnaill. They were involved in a series of battles against the Vikings: Battle of Tara (Ireland), Tara, Battle of Glenmama, Glenmama and Battle of Clontarf, Clontarf. The last of these saw Brian's death in 1014. Brian's campaign is glorified in the ''Cogad Gáedel re Gallaib'' ("The War of the Gaels with the Foreigners").
The Irish Church became closer to Continental models with the Synod of Ráth Breasail and the arrival of the Cistercians. There was also more trade and communication with Normanised Britain and France. Between themselves, the Ó Briain and the Ó Conchobhair attempted to build a national monarchy.

The remainder of the Middle Ages was marked by conflict between Gaels and
Anglo-Normans
The Anglo-Normans (, ) were the medieval ruling class in the Kingdom of England following the Norman Conquest. They were primarily a combination of Normans, Bretons, Flemings, French people, Frenchmen, Anglo-Saxons and Celtic Britons.
Afte ...
. The Norman invasion of Ireland took place in stages during the late 12th century. Norman mercenaries landed in Leinster in 1169 at the request of Diarmait Mac Murchada, who sought their help in regaining his throne. By 1171 the Normans had gained control of Leinster, and King Henry II of England, with the backing of the Papacy, established the Lordship of Ireland. The Norman kings of England claimed sovereignty over this territory, leading to centuries of conflict between the Normans and the native Irish. At this time, a literary anti-Gaelic sentiment was born and developed by the likes of Gerald of Wales as part of a propaganda campaign (with a Gregorian Reform, Gregorian "reform" gloss) to justify taking Gaelic lands. Scotland also came under Anglo-Norman influence in the 12th century. The Davidian Revolution saw the Normanisation of Scotland's monarchy, government and church; the founding of burghs, which became mainly English-speaking; and the royally-sponsored immigration of Norman aristocrats. This Normanisation was mainly limited to the Scottish Lowlands. In Ireland, the Normans carved out their own semi-independent lordships, but many Gaelic Irish kingdoms remained outside Norman control and gallowglass warriors were brought in from the Highlands to fight for various Irish kings.
In 1315, a Bruce campaign in Ireland, Scottish army landed in Ireland as part of Scotland's First War of Scottish Independence, war against England. It was led by Edward Bruce, brother of Scottish king Robert the Bruce. Despite his own Norman ancestry, Edward urged the Irish to ally with the Scots by invoking a shared Gaelic ancestry and culture, and most of the northern kings acknowledged him as High King of Ireland. However, the campaign ended three years later with Edward's defeat and death in the Battle of Faughart.
A Gaelic Irish resurgence began in the mid-14th century: English royal control shrank to an area known as the Pale and, outside this, many Norman lords adopted Gaelic culture, becoming culturally Gaelicised. The English government tried to prevent this through the Statutes of Kilkenny (1366), which forbade English settlers from adopting Gaelic culture, but the results were mixed and particularly in the West, some Normans became Gaelicised.
Imperial
During the 16th and 17th centuries, the Gaels were affected by the policies of the Tudors and the House of Stuart, Stewarts who sought to anglicise the population and bring both Ireland and the Highlands under stronger centralised control,
as part of what would become the
British Empire
The British Empire comprised the dominions, Crown colony, colonies, protectorates, League of Nations mandate, mandates, and other Dependent territory, territories ruled or administered by the United Kingdom and its predecessor states. It bega ...
. In 1542, Henry VIII of England declared the Lordship of Ireland Kingdom of Ireland, a Kingdom and himself King of Ireland. The new English, whose power lay in the Pale of Dublin, then began to Tudor conquest of Ireland, conquer the island. Gaelic kings were encouraged to apply for a surrender and regrant: to surrender their lands to the king, and then have them regranted as freehold (English law), freeholds. Those who surrendered were also expected to follow English law and customs, speak English, and convert to the Protestant Church of Ireland, Anglican Church. Decades of conflict followed in the reign of Elizabeth I of England, Elizabeth I, culminating in the Nine Years' War (Ireland), Nine Years' War (1594–1603). The war ended in defeat for the Irish Gaelic alliance and brought an end to the independence of the last Irish Gaelic kingdoms.
In 1603, with the Union of the Crowns, King James VI and I, James of Scotland also became king of England and Ireland. James saw the Gaels as a barbarous and rebellious people in need of civilising,
and believed that Gaelic culture should be wiped out.
Also, while most of Britain had converted to Protestantism, most Gaels had held on to Catholicism. When the leaders of the Irish Gaelic alliance Flight of the Earls, fled Ireland in 1607, their lands were confiscated. James set about colonising this land with English-speaking Protestant settlers from Britain, in what became known as the Plantation of Ulster. It was meant to establish a loyal British Protestant colony in Ireland's most rebellious region and to sever Gaelic Ulster's links with Gaelic Scotland.
In Scotland, James attempted to subdue the Gaelic clans and suppress their culture through laws such as the
Statutes of Iona
The Statutes of Iona, passed in Scotland in 1609, required that Highland Scottish clan
A Scottish clan (from Scottish Gaelic , literally 'children', more broadly 'kindred') is a kinship group among the Scottish people. Clans give a sense of ...
.
He also attempted to colonise the Isle of Lewis with Gentleman Adventurers of Fife, settlers from the Lowlands.
Since then, the Gaelic language has gradually diminished in most of Ireland and Scotland. The 19th century was the turning point as The Great Hunger in Ireland, and across the Irish Sea the Highland Clearances, caused mass emigration (leading to Anglicisation, but also a large Irish diaspora, diaspora). The language was rolled back to the Gaelic strongholds of the Highlands of Scotland, north west of Scotland, the west of Ireland and
Cape Breton Island
Cape Breton Island (, formerly '; or '; ) is a rugged and irregularly shaped island on the Atlantic coast of North America and part of the province of Nova Scotia, Canada.
The island accounts for 18.7% of Nova Scotia's total area. Although ...
in Nova Scotia.
Modern
The
Gaelic revival
The Gaelic revival () was the late-nineteenth-century national revival of interest in the Irish language (also known as Gaelic) and Irish Gaelic culture (including folklore, mythology, sports, music, arts, etc.). Irish had diminished as a sp ...
also occurred in the 19th century, with organisations such as ''Conradh na Gaeilge'' and ''An Comunn Gàidhealach'' attempting to restore the prestige of Gaelic culture and the socio-communal hegemony of the Gaelic languages. Many of the participants in the Irish Revolution of 1912–1923 were inspired by these ideals and so when a sovereign state was formed (the Irish Free State), post-colonial enthusiasm for the re-Gaelicisation of Ireland was high and promoted through public education. Results were very mixed however and the ''Gaeltacht'' where native speakers lived continued to retract. In the 1960s and 70s, pressure from groups such as ''Misneach'' (supported by Máirtín Ó Cadhain), the ''Gluaiseacht Chearta Siabhialta na Gaeltachta'' and others; particularly in Connemara; paved the way for the creation of development agencies such as ''Údarás na Gaeltachta'' and state media (television and radio) in Irish.
The last native speaker of Manx died in the 1970s, though use of the Manx language never fully ceased. There is now a resurgent language movement and Manx is once again taught in all schools as a second language and in some as a first language.
Culture
Gaelic society was traditionally made up of kin groups known as clans, each with its own territory and headed by a male chieftain. Order of succession, Succession to the chieftainship or kingship was through
tanistry
Tanistry is a Gaelic system for passing on titles and lands. In this system the Tanist (; ; ) is the office of heir-apparent, or second-in-command, among the (royal) Gaelic patrilineal dynasties of Ireland, Scotland and Mann, to succeed to ...
. When a man became Scottish clan chief, chieftain or Lists of Irish kings, king, a relative was elected to be his deputy or 'tanist' (''tánaiste''). When the chieftain or king died, his tanist would automatically succeed him. The tanist had to share the same great-grandfather as his predecessor (i.e. was of the same ''derbfhine'') and he was elected by freemen who also shared the same great-grandfather. Gaelic law is known as the ''Fénechas'' or
Brehon law
Early Irish law, also called Brehon law (from the old Irish word breithim meaning judge), comprised the statutes which governed everyday life in Early Medieval Ireland. They were partially eclipsed by the Norman invasion of 1169, but underwe ...
. The Gaels have always had a strong
oral tradition
Oral tradition, or oral lore, is a form of human communication in which knowledge, art, ideas and culture are received, preserved, and transmitted orally from one generation to another.Jan Vansina, Vansina, Jan: ''Oral Tradition as History'' (19 ...
, maintained by shanachies. In the ancient and medieval era, most Gaels lived in Roundhouse (dwelling), roundhouses and ringforts. The Gaels had their own style of dress, which became the modern
belted plaid and
kilt
A kilt ( ) is a garment resembling a wrap-around knee-length skirt, made of twill-woven worsted wool with heavy pleats at the sides and back and traditionally a tartan pattern. Originating in the Scottish Highland dress for men, it is first r ...
in Scotland. They also have their own extensive Gaelic literature, style of
music
Music is the arrangement of sound to create some combination of Musical form, form, harmony, melody, rhythm, or otherwise Musical expression, expressive content. Music is generally agreed to be a cultural universal that is present in all hum ...
and dances (Irish dancing and Highland dancing), social gatherings (Feis and Ceilidh), and their own sports (
Gaelic games
Gaelic games () are a set of sports played worldwide, though they are particularly popular in Ireland, where they originated. They include Gaelic football, hurling, Gaelic handball and rounders. Football and hurling, the most popular of the s ...
and
Highland games).
Language
Emergence

The
Gaelic languages
The Goidelic ( ) or Gaelic languages (; ; ) form one of the two groups of Insular Celtic languages, the other being the Brittonic languages.
Goidelic languages historically formed a dialect continuum stretching from Ireland through the Isle o ...
are part of the
Celtic languages
The Celtic languages ( ) are a branch of the Indo-European language family, descended from the hypothetical Proto-Celtic language. The term "Celtic" was first used to describe this language group by Edward Lhuyd in 1707, following Paul-Yve ...
and fall under the wider Indo-European languages, Indo-European language family. There are two main historical theories concerning the origin and development of the Gaelic languages from a
Proto-Celtic
Proto-Celtic, or Common Celtic, is the hypothetical ancestral proto-language of all known Celtic languages, and a descendant of Proto-Indo-European. It is not attested in writing but has been partly Linguistic reconstruction, reconstructed throu ...
root: the North Atlantic-based Insular Celtic languages, Insular Celtic hypothesis posits that Goidelic and Brythonic languages have a more recent common ancestor than Continental Celtic languages, while the Q-Celtic and Gallo-Brittonic languages, P-Celtic hypothesis posits that Goidelic is more closely related to the Celtiberian language, while Brythonic is closer to the Gaulish language.
Estimates of the emergence of proto-Gaelic in Ireland vary widely from the introduction of agriculture 7,000–6,000 BC to around the first few centuries BC. Little can be said with certainty, as the language now known as
Old Irish
Old Irish, also called Old Gaelic (, Ogham, Ogham script: ᚌᚑᚔᚇᚓᚂᚉ; ; ; or ), is the oldest form of the Goidelic languages, Goidelic/Gaelic language for which there are extensive written texts. It was used from 600 to 900. The ...
—ancestral to modern
Irish,
Scottish Gaelic
Scottish Gaelic (, ; Endonym and exonym, endonym: ), also known as Scots Gaelic or simply Gaelic, is a Celtic language native to the Gaels of Scotland. As a member of the Goidelic language, Goidelic branch of Celtic, Scottish Gaelic, alongs ...
and
Manx—only began to be properly recorded with the Christianisation of Ireland in the 4th century, after the introduction of the Roman script. Primitive Irish does appear in a specialised written form, using a unique script known as Ogham. The oldest examples of Ogham have survived in the form of memorial inscriptions or short epitaphs on pillar-like stone monuments (see Mac Cairthinn mac Coelboth). Ogham stones are found throughout Ireland and neighbouring parts of Britain. This form of written Primitive Irish is thought to have been in use as early as 1000 BC. The script frequently encodes a name or description of the owner and surrounding region, and it is possible that the inscribed stones may have represented territorial claims.
Contemporary
The Gaelic languages have been in steep decline since the beginning of the 19th century, when they were majority languages of Ireland and the Scottish Highlands; today they are endangered languages. As far back as the Statutes of Kilkenny in 1366, the English government had dissuaded use of Gaelic for political reasons. The
Statutes of Iona
The Statutes of Iona, passed in Scotland in 1609, required that Highland Scottish clan
A Scottish clan (from Scottish Gaelic , literally 'children', more broadly 'kindred') is a kinship group among the Scottish people. Clans give a sense of ...
in 1609 and the Society in Scotland for Propagating Christian Knowledge in the Highlands (for most of its history) are also notable examples. As the old Gaelic aristocracy was displaced or assimilated, the language lost its prestige and became primarily a peasant language, rather than one of education and government. The spread of the
English language
English is a West Germanic language that developed in early medieval England and has since become a English as a lingua franca, global lingua franca. The namesake of the language is the Angles (tribe), Angles, one of the Germanic peoples th ...
has resulted in a vast majority of people of Gaelic ancestry being unable to speak a Goidelic language.
During the 19th century, a number of ''Gaeilgeoir'' organisations were founded to promote a broad cultural and linguistic revival. ''Conradh na Gaeilge'' () was set up in 1893 and had its origins in Charles Owen O'Conor's Gaelic Union, itself a derivative of the Society for the Preservation of the Irish Language. Similar Highland Gaelic groups existed, such as ''An Comunn Gàidhealach''. At this time, Irish Gaelic was widely spoken along the Western seaboard (and a few other enclaves) and the Gaelic League began defining it as the "''Gaeltacht''", idealised as the core of true Irish-Ireland, rather than the Anglo-dominated Dublin. Although the Gaelic League itself aimed to be apolitical, this ideal was attractive to militant republicans such as the Irish Republican Brotherhood, who formulated and led the Irish Revolution at the turn of the 20th century; a key leader, Pádraig Pearse, imagined an Ireland "Not merely Free but Gaelic as well – Not merely Gaelic but Free as well." Scottish Gaelic did not undergo as extensive of a politicisation at this juncture, as nationalists there tended to focus on the Lowland mythos of William Wallace rather than the ''Gàidhealtachd''.
During the 1950s, the independent Irish state developed ''An Caighdeán Oifigiúil'' as a national standard for the Irish language (using elements from local dialects but leaning towards Connacht Irish), with a simplified spelling. Until 1973, school children had to pass Modern Irish to achieve a Leaving Certificate (Ireland), Leaving Cert and studying the subject remains obligatory. There are also where children are taught exclusively through the medium of Irish. In the ''Gaeltacht'' itself, the language has continued to be in crisis under the pressure of globalism, but there are institutions such as ''Údarás na Gaeltachta'' and a Minister for Culture, Heritage and the Gaeltacht, as well as media outlets such as ''TG4'' and ''RTÉ Raidió na Gaeltachta'' to support it. The last native Manx Gaelic speaker died in 1974, although there are ongoing attempts at revival. While the ''Gàidhealtachd'' has retracted in the Highlands, Scottish Gaelic has enjoyed renewed support with the Gaelic Language (Scotland) Act 2005, establishing the ''Bòrd na Gàidhlig'' under the devolved Scottish Government. This has seen the growth of Gaelic medium education in Scotland, Gaelic medium education. There are also media outlets such as ''BBC Alba'' and ''BBC Radio nan Gàidheal'', although these have been criticised for excessive use of English and pandering to an English-speaking audience.
Religion
Pre-Christian
The traditional, or "pagan", worldview of the pre-Christian Gaels of Ireland is typically described as Celtic animism, animistic, Celtic polytheism, polytheistic, Veneration of the dead, ancestor venerating and focused on the hero cult of archetypal Gaelic warriors such as Cú Chulainn and Fionn mac Cumhaill. The four seasonal festivals celebrated in the Gaelic calendar, still observed to this day, are
Imbolc
Imbolc or Imbolg (), also called Saint Brigid's Day (; ; ), is a Gaels, Gaelic traditional festival on 1 February. It marks the beginning of Spring (season), spring, and in Christianity, it is the calendar of saints, feast day of Brigid of Kild ...
,
Beltane
Beltane () or ''Bealtaine'' () is the Gaels, Gaelic May Day festival, marking the beginning of summer. It is traditionally held on 1 May, or about midway between the March equinox, spring equinox and summer solstice. Historically, it was widely ...
, Lughnasadh and
Samhain
Samhain ( , , , ) or () is a Gaels, Gaelic festival on 1 November marking the end of the harvest season and beginning of winter or the "Celtic calendar#Medieval Irish and Welsh calendars, darker half" of the year.Dáithí Ó hÓgáin, Ó hÓ ...
. While the general worldview of the Gaelic tradition has been recovered, a major issue for academic scholars is that Gaelic Oral literature, culture was oral prior to the coming of Christianity and monks were the first to record the beliefs of this rival worldview as a Irish mythology, "mythology". Unlike other religions, there is no overall "holy book" systematically setting out exact rules to follow, but various works, such as the ''
Lebor Gabála Érenn
''Lebor Gabála Érenn'' (literally "The Book of Ireland's Taking"; Modern Irish spelling: ''Leabhar Gabhála Éireann'', known in English as ''The Book of Invasions'') is a collection of poems and prose narratives in the Irish language inten ...
'', ''Dindsenchas'', ''Táin Bó Cúailnge'' and ''Acallam na Senórach'', represent the metaphysical orientation of ''Gaelachas''.
The main gods held in high regard were the
Tuatha Dé Danann
The Tuatha Dé Danann (, meaning "the folk of the goddess Danu"), also known by the earlier name Tuath Dé ("tribe of the gods"), are a supernatural race in Irish mythology. Many of them are thought to represent deities of pre-Christian Gaelic ...
, the superhuman beings said to have ruled Ireland before the coming of the Milesians, known in later times as the ''aes sídhe''. Among the gods were male and female deities such as The Dagda, Lugh, Nuada, The Morrígan, Aengus, Brigid and Áine, as well as many others. Some of them were associated with specific social functions, seasonal events and personal archetypal qualities. Some physical locations of importance in Ireland related to these stories include the Brú na Bóinne, Hill of Tara and Hill of Uisneach. Although the ''sídhe'' were held to intervene in worldly affairs sometimes, particularly battles and issues of sovereignty, the gods were held to reside in Celtic Otherworld, the Otherworld, also known as ''Mag Mell'' (Plain of Joy) or ''Tír na nÓg'' (Land of the Young). This realm was variously held to be located on a set of islands or underground. The Gaels believed that certain heroic persons could gain access to this spiritual realm, as recounted in the various ''echtra'' (adventure) and ''immram'' (voyage) tales.
Christianity

The Gaels underwent Christianisation during the 5th century and that religion, ''de facto'', remains the predominant one to this day, although irreligion is fast rising. At first the Christian Church had difficulty infiltrating Gaelic life: Ireland had never been part of the
Roman Empire
The Roman Empire ruled the Mediterranean and much of Europe, Western Asia and North Africa. The Roman people, Romans conquered most of this during the Roman Republic, Republic, and it was ruled by emperors following Octavian's assumption of ...
and was a decentralised tribal society, making patron-based mass conversion problematic.
It gradually penetrated through the remnants of
Roman Britain
Roman Britain was the territory that became the Roman province of ''Britannia'' after the Roman conquest of Britain, consisting of a large part of the island of Great Britain. The occupation lasted from AD 43 to AD 410.
Julius Caes ...
and is especially associated with the activities of
Patrick, a Britons (Celtic people), Briton who had been a slave in Ireland.
He tried to explain its doctrines by using elements of native folk tradition, so Gaelic culture itself was not completely cast aside and to some extent local Christianity was Gaelicised.
The last High King inaugurated in the pagan style was Diarmait mac Cerbaill. The 6th–9th centuries are generally held to be the height of Celtic Christianity, Gaelic Christianity, with numerous saints, scholars and works of devotional art.
This balance began to unravel during the 12th century with the polemics of Bernard of Clairvaux, who attacked various Gaelic customs (including polygamy and hereditary clergy) as "pagan". The Catholic Church of the time, fresh from its split with the Eastern Orthodox Church, was becoming more centralised and uniform throughout Europe with the Gregorian Reform and military reliance on Germanic peoples at the fringes of Latin Christendom, particularly the warlike Normans. As part of this, the Catholic Church actively participated in the Norman conquest of Gaelic Ireland, with the issuing of ''Laudabiliter'' (claiming to gift the King of England the title "Lord of Ireland") and in Scotland David I and the Scottish Church, strongly encouraged king David who Davidian Revolution, Normanised that country. Even within orders such as the Franciscans, ethnic tensions between Norman and Gael continued throughout the later Middle Ages, as well as competition for ecclesiastic posts.
During the 16th century, with the emergence of Protestantism in Ireland, Protestantism and Council of Trent, Tridentine Catholicism, a distinct Christian sectarianism made its way into Gaelic life, with societal effects carrying on down to this day. The Tudor state used the Church of Ireland, Anglican Church to bolster their power and enticed native elites into the project, without making much initial effort to convert the Irish Gaelic masses; meanwhile, the mass of Gaeldom (as well as the "Old English (Ireland), Old English") became Irish Catholic, staunchly Catholic. Due to the geopolitical rivalry between Protestant Britain and Catholic France and Spain, the Catholic religion and its mostly Gaelic followers in Ireland were persecuted for a long time. In the Scottish Highlands too, the Gaels were generally slow to accept the Scottish Reformation. Efforts at persuading Highlanders in general of the value of this primarily Lowland movement were hampered by the complicated politics of the Highlands, with religious rivalries and clan antagonism becoming entwined (a prominent example was the intense rivalry, even hatred, between the generally Clan Campbell, Presbyterian Campbells and the generally Clan Donald, Catholic MacDonalds), but most Highlanders later converted to Presbyterianism in the 19th century during the breakdown of the clan system. In a few remote areas, however, Catholicism was kept alive and even rejuvenated to some extent by Irish Franciscan missionaries, but in most of the Highlands it was replaced by Presbyterianism.
The adoption of the Free Church of Scotland (1843–1900) in the Highlands following the Disruption of 1843 was a reassertion of Gaelic identity in opposition to forces of improvement and clearance.
Notes
References
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External links
Foras na Gaeilgenbsp;– Irish agency promoting the language
nbsp;– Scottish agency promoting the language
Culture Vanninnbsp;– Manx agency promoting the language
The Columba Projectnbsp;– Pan-Gaelic cultural initiative
Gaelic Society Collectionat University College London (c. 700 items collected by the Gaelic Society of London)
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