Domnall Mór Ua Briain

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Domnall Mór Ua Briain, or Domnall Mór mac Toirrdelbach Ua Briain, was King of Thomond in Ireland from 1168 to 1194 and a claimant to the title King of Munster. He was also styled King of Limerick, a title belonging to the O'Brien dynasty since Brian Boru's annexation of the Norse city in the 10th century.

History[edit]

Domnall Mór ("Donall the Great"), a great-great-great grandson of Brian Boru, was the third son of King Tairdelbhach of Munster, who reigned 1142 to 1167. He ascended to the throne in 1168 after the death of his eldest brother, Muirchertach, who had succeeded their father as king. Muirchertach was killed at the instigation of his cousin Conchobar mac Muirchertach Ua Briain. His other brother Brian of Slieve Bloom was blinded in 1169. The same year, Domnall entered into conflict with the High King of Ireland, Ruaidrí Ua Conchobair and was forced to pay him a tribute of 300 cows.

In 1171, he submitted to King Henry II of England at Cashel, but he continued to fight successfully against the Norman incursion into south-west Ireland for many years. In 1175, having demolished the Cambro-Normans at the Battle of Thurles, he consolidated his power by blinding two of his cousins, Dermot mac Taig Ua Briain and Mathgamain mac Toirdhelbeach Ua Briain, in Limerick. He was, however, driven from Thomond by Ua Conchobair, the High King, the same year. In 1176, he drove the Normans from Limerick and in 1178 finally drove out the Uí Fidgenti (AI), the ancient rulers of the modern County Limerick region.

In 1184, part of his lands were enfeoffed to Philip de Braose, Lord Deputy of Ireland. Supported by Robert Fitz-Stephen and Miles de Cogan, the Lord Deputy set out to take possession of Limerick, but on approaching the city, turned back in a panic. In 1185 when Prince John of England intervened in Ireland, Domnall Mór demolished the Normans again when John was plundering along the valley of the River Suir. The same year he also blinded the last Dermot brother. In 1188, he helped the men of Connacht under Conchobar Maenmaige Ua Conchobhair to overcome Jean de Courcy in the Curlew Mountains. In 1193, the Normans devastated Clare in reprisal and plundered Domnall's possessions in Ossory.

He established Holy Cross Abbey in 1180 and Kilcooly Abbey in 1184, both under the Cistercian order.[1]

According to the Annals of Ulster, he was the last king of Munster, dying in 1194. He is buried in the apse of St. Mary's Cathedral, Limerick, a church he first organised. His tomb is covered with a carved sepulchre stone near the church's main altar.

Family[edit]

Domnall Mor married Orlacan, daughter of Diarmait Mac Murchada and Mór Ní Tuathail. He left several sons who fought amongst themselves and with their cousin Muichertach, son of Brian of Slieve Bloom, for the succession in Thomond.

See also[edit]

Sources[edit]

  1. ^ Archdiocese of Cashel Website.