Diarmait Ua Briain (1060 –1118) was an 11th-century Irish king who ruled
Munster
Munster ( gle, an Mhumhain or ) is one of the provinces of Ireland, in the south of Ireland. In early Ireland, the Kingdom of Munster was one of the kingdoms of Gaelic Ireland ruled by a "king of over-kings" ( ga, rí ruirech). Following the ...
from
1114 to 1118.
One of three sons of
Toirdelbach Ua Briain
Toirdhealbhach Ua Briain (old spelling: Toirdelbach Ua Briain), anglicised ''Turlough O'Brien'' (100914 July 1086), was King of Munster and effectively High King of Ireland. A grandson of Brian Bóruma, Toirdelbach was the son of Tadc mac Briain ...
, he was banished from Munster by his brother
Muirchertach Ua Briain
Muircheartach Ua Briain (old spelling: Muirchertach Ua Briain) (also known as Murtaugh O'Brien) (c. 1050 – c. 10 March 1119), son of Toirdelbach Ua Briain and great-grandson of Brian Boru, was King of Munster and later self-declared High King ...
shortly after the death of their father in 1086. He lived in exile for several years while his brother ruled as
King of Munster. He is believed to have been the commander of the Irish fleet that supported
Rhys ap Tewdwr
Rhys ap Tewdwr (c. 1040 – 1093) was a king of Deheubarth in Wales and member of the Dinefwr dynasty, a branch descended from Rhodri the Great. He was born in the area which is now Carmarthenshire and died at the battle of Brecon in April 10 ...
at the
Battle of Mynydd Carn.
In 1093, he reconciled with Muirchertach after recognizing his claim and was installed as ''dux'' of
Waterford. He eventually succeeded his brother as acting King of Munster when his brother became seriously ill in 1114. After taking the throne, he banished Muircheartach and soon was involved in a four-year struggle for control of Munster. In 1116, he attacked Muirchertach and
Brian Ua Briain
Brian (sometimes spelled Bryan (given name), Bryan in English) is a male given name of Irish language, Irish and Breton language, Breton origin, as well as a surname of Occitan language, Occitan origin. It is common in the English-speaking world.
...
''"in violation of a mutual oath on the relics of Ireland"'' besieging
Limerick. This resulted in Muirchertach making peace with Diarmait but he was eventually captured by Muircheartach.
He later died in
Cork
Cork or CORK may refer to:
Materials
* Cork (material), an impermeable buoyant plant product
** Cork (plug), a cylindrical or conical object used to seal a container
***Wine cork
Places Ireland
* Cork (city)
** Metropolitan Cork, also known as G ...
in 1118 and in the same year,
Toirdelbach Ua Conchobair invaded Munster and partitioned the land between the sons of Diarmait Ua Briain and
Tadg Mac Carthaig
Tadhg (, ), (pronunciations given for the name ''Tadgh'' separately from those for the slang/pejorative ''Teague''.) commonly misspelled Taig, "Taig" or "Teague", is an Irish language, Irish and Scottish Gaelic masculine name that was very commo ...
,
Conchobar Ua Briain of
Thomond and
Toirdelbach Mac Carthaig of
Desmond Desmond or Desmond's may refer to:
Arts and entertainment
* ''Desmond'' (novel), 1792 novel by Charlotte Turner Smith
* '' Desmond's'', 1990s British television sitcom
Ireland
* Kingdom of Desmond, medieval Irish kingdom
* Earl of Desmond, Iris ...
respectively.
Family
He married Mór Ua Conchobair, daughter of
Ruaidrí Ua Conchobair anglicised Roderic O'Connor), called Ruaidrí na Saide Buide
Anglicisation is the process by which a place or person becomes influenced by English culture or British culture, or a process of cultural and/or linguistic change in which something non-English becomes English. It can also refer to the influen ...
King of Connacht (died 1118) and had two sons:
*Tadc (Tadhg) (died 1154)
*
Toirdhealbhach (died 1167)
He had two other sons by unknown wives or mistresses:
*
Cochobhar na Cathrach (died 1142)
*Donnchad,
Bishop of Killaloe (died 1164)
Source:
[ ]John O'Hart
John O'Hart (1824–1902) was an Irish genealogist. He was born in Crossmolina, County Mayo, Ireland. A committed Roman Catholic and Irish nationalist, O'Hart had originally planned to become a priest but instead spent two years as a police ...
,"Irish Pedigrees or the Origin and Stem of the Irish Nation", Volume 1, 1892, page 157, https://archive.org/stream/irishpedigreesor_01ohar#page/157
References
{{DEFAULTSORT:Ua Briain, Diarmait
1060 births
1118 deaths
Kings of Munster
12th-century Irish monarchs
Diarmait
Diarmuid Ua Duibhne (Irish pronunciation: ) or Diarmid O'Dyna, also known as Diarmuid of the Love Spot, was a demigod, son of Donn and one of the Fianna in the Fenian Cycle of Irish mythology (traditionally set in the 2nd to 4th century). He ...
11th-century Irish people