Donnchadh Cairbreach Ó Briain was

King of Thomond The kings of Thomond () ruled from the establishment of Thomond during the High Middle Ages, until the Early modern period. Thomond represented the legacy of Brian Bóruma and the High Kings of Ireland of his line who could not hold onto all of ...

from 1198 to his death in 1242. He founded Moor Abbey (Galbally) early in the 13th century before it was re-founded in 1471 and established by the first Franciscan pontiff under the reign of Sixtus IV, a religious order founded by Saint Francis of Assisi.

Reign

He was one of the three sons of

Domnall Mór Ua Briain Domnall Mór Ua Briain, or Domnall Mór mac Toirrdelbaig Uí Briain, was King of Thomond in History of Ireland, Ireland from 1168 in Ireland, 1168 to 1194 in Ireland, 1194 and a claimant to the title King of Munster. He was also styled History ...

. His father died in 1198 and his brother Muircheartach Dall was blinded by the Normans, his other brother Conchobhar Ruadh was killed in 1198 and Donnchadh began his reign. He founded Ennis Friary in the 1210s as penance for the struggle with his brother Muircheartach Finn Ó Briain. The MacConmara and Ó Cuinn clans revolted against him and he defeated the revolt with the help of his brother-in-law de Burgh and other Normans. In return he granted

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 ...

and lands in Tipperary and (modern)

County Limerick County Limerick () is a western Counties of Ireland, county in Republic of Ireland, Ireland. It is in the Provinces of Ireland, province of Munster and is located in the Mid-West Region, Ireland, Mid-West which comprises part of the Southern Reg ...

to the Normans, reducing Thomond to the area of the modern-day

County Clare County Clare () is a Counties of Ireland, county in the Provinces of Ireland, province of Munster in the Southern Region, Ireland, Southern part of Republic of Ireland, Ireland, bordered on the west by the Atlantic Ocean. Clare County Council ...

, protected from further incursions by 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 ...

Family

He married Sadhbh Ua Cinnéidigh and had six known children: John O'Hart,"Irish Pedigrees or the Origin and Stem of the Irish Nation", Volume 1, 1892, page 158, https://archive.org/stream/irishpedigreesor_01ohar#page/158/mode/2up * Conchobhar na Siudane *Toirdhealbhach *Muircheartach *Diarmaid *Tadhg Dall *Sláine - Abbess of Killowen

References

{{DEFAULTSORT:O Briain, Donnchadh Cairbreach Kings of Thomond 12th-century Irish monarchs 13th-century Irish monarchs