Gallagher (Old Irish: Ó Gallchobhair, Ó Gallchobhoir; Modern Irish: Ó Gallachóir) is an Irish Gaelic clan based most prominently in what is today County Donegal. The clan name originated in the 10th century as a derivative of its founder Gallchobhair mac Rorcan.[citation needed] They descend in the paternal line from the Northern Uí Néill's Cenél Conaill. The immediate progenitors of the Gallaghers held the High Kingship of Ireland during the 6th and 7th centuries in the form of Ainmuire mac Sétnai, Áed mac Ainmuirech, Máel Coba mac Áedo and Cellach mac Máele Coba; Áed was also an ancestor of the O'Donnell and O'Doherty clans. Indeed, during the Middle Ages, the Gallaghers were Marshals of the Kingdom of Tyrconnell, ruled by their previously junior[citation needed] kinsmen the O'Donnells.


In Ireland, the anglicised version of the name "Gallagher" is pronounced "Goll-a-her" in parts of its native County Donegal in Ulster, while elsewhere in the country it is most frequently pronounced as "Gall-a-her". Outside Ireland, there has been a corruption or alteration of the pronunciation, resulting in "Gall-ag-er" in some parts of Britain and the USA. The name Gallagher is an anglicisation of the Irish surname Ó Gallchobhair, Ó Gallchobhoir (or two newer spelling forms, Ó Gallchóir and Ó Gallachóir[1]), these being masculine forms; the corresponding feminine forms are Ní Ghallchobhair (newer forms Ní Ghallchóir[discuss] and Ní Ghallachóir), and means "foreign assistance" or "foreign helper".[dubious ] Apart from the aforementioned spelling there are at least 30 recorded variants including Gallacher, Gallager, Gallaher, Gallocher, Galliher, Gallaugher, Galagher, Galegher, Goligher, Golliher,[2] Gollaher[3][4] and Gallahue.[5]

The earliest recorded incidence of the name is in a fragment of a manuscript presently in the Royal Library of Brussels, which states the name "Gallchubhair".[6] A similarly earlier mention occurs in the Annals of the Four Masters, where it is recorded that Mael Cobo Úi Gallchobhar, abbot of Scrin Adamnain, died in 1022 AD.[7] Gallchobhar was the one given the role of founding father of the clan at the advent of widespread surname usage in Ireland, which began around the 10th century.[8]

As with the modern Irish surname Ó Conchúir, frequently anglicized as O'Conor, Ó Gallchóir similarly appears to be a conjoined/compound word and shares in common with O'Connor, the same suffix. With O'Conner likewise starting out in the original Irish as Conchobhar/Conchubhar(Con-chobhar meaning "lover of canines"). The original Irish spelling, Ó Gallchobhar, draws from this same compound naming convention.

It is the most common surname in County Donegal (Dún na nGall means "fort of the foreigner"), and thus is very common in Derry, and is the fourteenth most common by birth records in Ireland. In the United States, it was ranked by the 2000 US Census as the 433rd most common name out of over 68,000 surnames found.[9] According to Professor Edward MacLysaght, in the mid 20th century Gallagher was one of the most common Irish surnames, most of the recorded births being located in the northern province, Ulster, and the western province, Connacht, with the majority being recorded in the homeland of the sept – County Donegal in Ulster.[10] In 1890 it was ranked the 12th most common surname in Ireland, while in 1996 it was 20th.[11]

Male Daughter Wife (Long) Wife (Short)
Ó Gallchobhair Ní Ghallchobhair Bean Uí Ghallchobhair Uí Ghallchobhair
Ó Gallachóir Ní Ghallachóir Bean Uí Ghallachóir Uí Ghallachóir



Conall Gulban, son of Niall Noígiallach, founded the kingdom of Tír Chonaill (Tyrconnell) in the 5th century. It comprises much of what is now County Donegal, and several surrounding areas. The following is a pruned and truncated version of the Conall Gulban family tree with Conall Gulban's brothers Eógan, to Lóegaire, also displayed. For clarity's sake number of Conall Gulban's sons, grandsons and great-grandsons are not listed. Gallchobar is descended from Mael Coba brother of Domnall mac Áedo.[12]

The prefix Mac means 'son of' and the now more popular Ua (later Ó') means 'grandson of, or, of the generations of'.[13]

   Niall Noígiallach, died c. A.D.455.
   Conall Gulban Eógan Cairpre Fiacha Conall Cremthainne Lóegaire
           Cenél nEógain             Cenél Fiachach                   Cenél Lóegaire
                            Cenél Cairpre                  / \
                                                          /   \
                                                         /     \
                                             Clann Cholmáin Síl nÁedo Sláine 
  Cenél Conaill of In Fochla
   Fergus Cennfota  
   Ainmuire mac Sétnai, d. 569 Lugaid
    Rí/King of Ireland                              
                                             Cenél Lugdach                                                                          
   Áed (mac Ainmuirech), d. 598    
   Domnall, d. 642 Conall Cu, Mael Coba, d. 615, Cumuscach, d. 597
                                     Cellach Conall Cael 
                                       both died 658 & 654
                              (Clann Ua Gallchobair)
   Óengus, died 650 
   Further Cenél Conaill.
Gallaghers in Ireland.

The Gallchobair clan hails from the Irish baronies of Tír Aodha/Tír Hugh("land of Hugh") and Raphoe, in the east of County Donegal, Ireland, in which Ballybeit and Ballynaglack served as seats of their power.[14] They are members of Cenél Aedha ("descendants of Hugh/Áed (mac Ainmuireach)") and of the larger Cenél Conaill.

One modern and therefore apocryphal origin story is that the original person, being a courageous and charitable person, went to the assistance of the crew of the first Viking ship to arrive off the Irish coast and whose ship was wrecked off the coast of County Donegal, where he was the local chieftain. He having first saved them and then cared for them, they eventually returned to their homeland, only to return soon after with the first raiding party. Hence he was given the name ("Gall" means stranger or foreigner in Irish and the ending "cubhair" & "cobhair" is suggested as perhaps starting off as "cabhair" meaning help or helper).[dubious ][citation needed] Whatever the derivation of his name, Gallagher was the one given the role of founding father of the clan at the advent of surname use in Ireland in around the 10th century.[8] The earliest recorded incidence of the name in a fragment of a manuscript presently in the Royal Library of Brussels is "Gallchubhair".[6] A similarly earlier mention occurs in the Annals of the Four Masters, where it is recorded that Mael Cobo Úi Gallchobhar, abbot of Scrin Adamnain, died in 1022 AD.[7]

The derivation of the surname Gallagher is frequently suggested to be "foreign help" or "foreign helper" from the Irish gall meaning "stranger" and cobhair which is in modern times, suggested as perhaps[why?] starting as cabhair which means "to help".[citation needed] It is a matter of conjecture whether this appellation denoted merely one who aided strangers from other parts in the period of Ireland 400-1000 AD or, as has been suggested,[by whom?] more particularly a collaborator with the Norsemen/Vikings, who were in those days[specify][when?] raiding the coast of north west Ireland.

The family's origins are with the chieftain Aodh, a name corresponding to the English Hugh (whence Tirhugh), a lineal descendant of Conall Gulban son of 5th century High King and warlord Niall Noígíallach, known in English as Niall of the Nine Hostages, who is reputed to have brought St Patrick to Ireland as a slave. Aodh established his dúnarus fort building or residence at a place corresponding to the present day townland of Glassbolie[where?] in Tirhugh. The chieftains of his line ruled in relative peace[dubious ] for several generations until the beginning of the Viking invasion of Ireland in the 9th century. The ruling chieftain of the time, whose real name is not recorded, was almost certainly obliged[dubious ] to come to some accommodation with the foreign invader resulting in the nickname "Gallcóbhair" which has been applied to his descendants thereafter.[dubious ]

It would appear that the previously obscure Cenél Lugdach forged multiple matrimonial alliances with the local Viking leadership, and not the Gallchobair of the Cenél Aedha who existed before the arrival of the Vikings in the 800s, the Cenél Lugdach are descended from Lugaid mac Sétnai, one of the great-grandsons of Conall Gulban.[12] In contrast to the Gallchobair who are descended from his brother and the first born son Ainmuire mac Sétnai. The Cenél Lugdach tribal territory extended from Dobhar (Gweedore) to the river Suilidhe (Swilly) in Donegal. From this clan descend the Cenél Conaill surnames of O'Doherty, and O'Donnell.

The modern surname system began c. 900,[13] but wasn't adopted in its entirety until about 1100. Despite the legend that Brian Boru was somehow responsible for the widespread implementation of this naming system, the custom may have developed of its own accord as the Irish population grew in size.[15]

The Ó Gallchobhair sept claims to be the most senior family of the Cenél Conaill as Gallchobar was descended from Conall Gulban. The sept's territory was spread across the areas within the modern baronies of Raphoe and Tirhugh in Co Donegal. From the 14th century until the 16th century, the sept's chiefs were marshals of the O'Donnell cavalry in the O'Donnell Lucht Tighe. The principal branch of the family was centred at Ballybeit and Ballynaglack.[10] Although generally aligned with the O'Donnells during the period, a renegade band of Gallaghers helped their rival, Shane O'Neill, escape after the battle of Fearsaid Suili in 1567.[16]

16th century Tudor-era

In the 16th century, the Ó Gallchobairs also opposed the Ó Donnells for a short time for religious reasons after King Henry VIII of England declared himself King of Ireland and head of the church in the Tudor conquest of Ireland beginning in 1541. To maintain their lands and power, the Ó Donnell Lord of Tír Conaill, was forced to recognise Henry VIII as King of Ireland, leader of the Irish Church and had to defend the new English religion from anyone who would advocate papal authority. As a result, the Ó Donnells supported Bishop O'Kane over Edmond O'Gallagher. O'Gallagher was never accepted as bishop, and he died mysteriously in 1543. The O'Gallagher clan then seized the Ó Donnell Lifford Castle in retaliation, for about a year.[7]

With the death of Edmond, the Pope appointed another Gallagher as Bishop of Raphoe in his place, although this bishop was not capable of assuming this position until the arrival of the English Queen Mary who restored Roman Catholicism as the state religion in 1553. It appears that, with the death of the subservient Ó Donnell lord, the practice of Catholicism was left to continue peacefully in Tír Conaill. At least up to the end of the Nine Years' War(c. 1594) and the British Plantation of Ulster(1606).[7]

Redmond O'Gallagher was appointed Bishop of Killala by Pope Paul III in 1545 and presumably was recognised by the Crown in the reign of Queen Mary I, but there is no record of his recognition by Queen Elizabeth I. In 1569, Redmond O'Gallagher was appointed Bishop of Derry. He died in office on 15 March 1601. Donat O'Gallagher, OFM succeeded Redmond as Bishop of Killala in 1570. In 1580, Donat was appointed Bishop of Down and Connor and died in office in 1581.

17th century and the Flight of the Earls

In the Annals of the Four Masters, on 14 September 1607, mention by Tadhg Ó Cianáin is made of five Gallaghers named Cathaoir (mac Toimlin), Cathaoir (mac Airt), Toirleach Corrach, Tuathal and Aodh Og who accompanied the O'Donnell 'Earls', as they fled Ireland. They stayed in Belgium and joined the O'Neill regiment in the Spanish Army of Flanders. The regiment fought against the Dutch during the Eighty Years' War. Aodh Ó Gallchobhair and his wife (mentor and nursemaid of O'Donnell sons) chose to travel with the O'Donnells to Rome.[17][18]

Michael Gallaher was the first to arrive in Philadelphia as a merchant trader, in the year 1750.

18th to 19th century under the British Act of Union

Captain Gallagher (died 1818) was an Irish highwayman who, as one of the later Irish Rapparees (guerrillas), led a bandit group in the hills of the Irish countryside, armed with the Blunderbuss of the day, during the late 18th and early 19th century.[19][20][21]

Born in Bonniconlon, County Mayo he lived with his aunt in Derryronane, Swinford for much of his early life and was raised near the woods of Barnalyra(roughly the location of modern-day Ireland West Airport Knock)[20] As he reached early adulthood, he and a group of others began raiding mail coaches as well as wealthy landowners and travellers throughout eastern Mayo and parts of southern County Sligo and western County Roscommon.

His attacks on landowners were especially widely known and, in one reported incident, Gallagher and his men raided the home of an extremely unpopular landlord in Killasser and forced him to eat half a dozen eviction notices he had recently drawn up for nearly half a dozen tenant farmers before escaping with silver and other valuables.

Although successfully evading British patrols for some time, he was finally apprehended by authorities in the parish of Coolcarney (or possibly Attymass) near the foothills of the Ox Mountains while recovering from an illness at a friend's home during Christmas.

He had been informed on by a neighbour whom Gallagher had formerly helped after sending a message of Gallagher's whereabouts to the British commanding officer at Foxford. Immediately sending for reinforcements from Ballina, Castlebar and Swinford, a force of 200 redcoats were sent after Gallagher and, upon their arrival, proceeded to surround the home where the highwayman had been staying. Gallagher, by then in poor health and not wishing to endanger his host or his family, surrendered to the British. Taken back to Foxford, he was tried and convicted before being taken to Castlebar where he was executed.

Shortly before his execution, he had claimed to the British commanding officer that his treasure had been hidden under a rock in the woods of Barnalyra. After Gallagher's execution, the officer quickly led several cavalryman to Barnalyra who discovered there were thousands of rocks in the wood, upon a long search of all the rocks within the area, they reportedly only recovered a jewel hilted sword. It has been speculated that Gallagher may have been hoping to lead them to the site in the hopes his men would be able to rescue him from their hideout near the Derryronane-Curryane border although the treasure was never recovered.

Irish war of Independence

Cork Free Press's Frank Gallagher, hired by William O'Brien of the political party, the All-for-Ireland League, was a prominent Sinn Féin supporter in the press. However the paper was censored and suppressed in 1916 after Frank, as its republican editor, accused the British authorities of lying about the conditions and situation of republican prisoners in Frongoch internment camp.[22] Frank is most well known for penning Four Glorious Years 1918–1921[23] and becoming the deputy director of the first Dáil's Department of Publicity in March 1921, assisting his colleague Erskine Childers, and together they published the Irish Bulletin.[24] In 1965 his book The Anglo-Irish Treaty was published posthumously.[25] In 1974 The indivisible island : the history of the partition of Ireland was to be his last published, again posthumously.[26]


The Gallagher coat of arms displays a black lion rampant on a silver shield, treading on a green snake surrounded by eight green trefoils. The correct heraldic description is "Field argent a lion rampant sable treading on a serpent in fess proper between eight trefoils vert".[27] The crest which surmounts the helmet over the shield depicts a red crescent surrounding a green snake or, to give its heraldic definition, "A crescent gules out of the horns a serpent erect proper". The motto of the clan in Latin is Mea Gloria Fides ("The Faith is My Glory").[28] While in Irish it is Buaidh nó Bás ("Victory or death").[29][30][31][32]


See also


  1. ^ "Study of Electricity Storage Technologies and Their Potential to Address Wind Energy Intermittency in Ireland. Co-authored with Dr. Brian Ó Gallachóir" (PDF). 
  2. ^ "Gallagher Name Meaning and History". Ancestry.com. Retrieved 10 April 2008. 
  3. ^ "Austin Gollaher Saved Abraham Lincoln From Drowning". 
  4. ^ "Abraham Lincoln's Boyhood Home at Knob Creek". National Park Service. 5 November 2007. Retrieved 5 February 2009. 
  5. ^ "Surname Database: Gallahue Last Name Origin". Surnamedb.com. Retrieved 13 May 2017. 
  6. ^ a b "Gallagher clan background". 
  7. ^ a b c d "Donegal Generations". Tomgallen.com. 11 January 2014. Retrieved 13 May 2017. 
  8. ^ a b "Gallagher One-Name Study". 
  9. ^ "last name GALLAGHER". Americanlastnames.com. Retrieved 13 May 2017. 
  10. ^ a b MacLysaght, Edward (1957). Irish Families, Their Names, Arms and Origins. Dublin: Hodges, Figgis & Co. pp. 153–154. 
  11. ^ John Grenham. "Irish surnames". Irishtimes.com. Retrieved 13 May 2017. 
  12. ^ a b "From Máel Coba Ua Gallchobair and His Early Family by TG Ó Canann – 2004, Journal of RSAI Archiver > DNA-R1B1C7 > 2011–12 > 1325125843". 
  13. ^ a b "The First Irish Surnames Written by Darren McGettigan". 
  14. ^ Families of Co. Donegal Ireland: From the Earliest Times to the 20th Century ... By Michael C. O'Laughlin. 2001, pg 82
  15. ^ "The Origin of Irish Surnames". Archived from the original on 21 February 2014. 
  16. ^ "This page honors the memory of Mary Gallagher of Donegal". 
  17. ^ http://www.flightoftheearls.ie Archived 5 May 2010 at the Wayback Machine.
  18. ^ "Archived copy". Archived from the original on 20 June 2009. Retrieved 4 April 2010. 
  19. ^ "The Irish Highwayman" as told in "Tales from the West of Ireland" by Sean Henry". 
  20. ^ a b "In the story it mentions an area called Barnalyra, this is roughly where Knock Airport is now built" Eithne Gallagher Sligo, Ireland.
  21. ^ "Subject: [IRELAND] Tales from the West of Ireland Date: Mon, 8 Jan 2001 17:50:40 -0600 http://www.mayo-ireland.ie/myoalive/Henry/Tales.htm Tales from the West of Ireland Sean Henry".  External link in title= (help)
  22. ^ Martin, Peter: Censorship in the two Irelands 1922–39, Introduction p.9, Irish Academic Press (2008) ISBN 0-7165-2829-0
  23. ^ "Four Glorious Years 1918–1921 ISBN 978-1841317847". 
  24. ^ Maume, Patrick: A Nursery of Editors; the Cork Free Press, 1910–16 in "History IRELAND" March/April 2007 pp.44–46
  25. ^ "The Anglo-Irish treaty book by Frank Gallagher 0 available edition Alibris Books". Alibris.com. 1 January 1970. Retrieved 13 May 2017. 
  26. ^ "The indivisible island : the history of the partition of Ireland". ISBN 9780837175157. 
  27. ^ "Gallagher coat of arms, Gallagher family crest, Gallagher heraldry, Gallagher family history". Heraldry.ws. Retrieved 13 May 2017. 
  28. ^ MacLysaght, Edward (1957). Irish Families, Their Names, Arms and Origins. Dublin: Hodges, Figgis & Co. p. plate XII. 
  29. ^ "Etymology & Arms". galaher. Retrieved 13 May 2017. 
  30. ^ "O'Gallagher Family Crest and History". Celticradio.net. Retrieved 13 May 2017. 
  31. ^ "Heraldry". Web.archive.org. Archived from the original on 7 March 2005. Retrieved 13 May 2017. 
  32. ^ "Archived copy". Archived from the original on 26 March 2007. Retrieved 31 July 2015. 

Further reading

  • Heraldry and Genealogy (Dublin, 1978)
  • Journal of the Royal Society of Antiquaries of Ireland, Vol. 134 (2004). Ó Cannan, T. Máel Coba Ua Gallchobair and His Early Family Background.
  • Irish Chiefs and leaders, Paul Walsh, 1960. Allegedly contains further reading according to "Families of Co. Donegal Ireland: From the Earliest Times to the 20th Century ... By Michael C. O'Laughlin. 2001, pg 82"

External links