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Domnall Mór Ua Briain
Donal Mor Tomb Limerick.jpg
King of Thomond
Reign 1168-1194
Coronation 1168
Predecessor Muirchertach mac Toirdelbhach Ua Briain
Successor Muirchertach Dall macDomnaill Mór
King of Munster
Reign 1168-1194
Coronation 1168
Predecessor Muirchertach mac Toirdelbhach Ua Briain
King of Limerick
Reign 1168-1194
Coronation 1168
Predecessor Muirchertach mac Toirdelbhach Ua Briain
Died 1194
Burial The Cathedral of Saint Mary Blessed Virgin, Limerick
Spouse Orlacan Ní Murchada
Issue
  • Muirchertach Dall macDomnaill Mór Ó Briain,
  • Conchobar Ruad macDomhnaill Ó Briain,
  • Donnchadh Cairbreach Ó Briain,
  • Unnamed Daughter
House House of Ua Briain
Father Toirdhealbhach mac Diarmada Ua Briain
Mother Sadb MacGillapatrick
Religion Roman Catholicism

Domnall Mór Ua Briain was an important king in Ireland during the 1100s. He ruled the area known as Thomond from 1168 to 1194. He was also known as the King of Limerick. His family, the O'Brien dynasty, had held power in Limerick since the 900s. Domnall Mór means "Donall the Great," and he certainly lived up to his name!

Becoming King of Thomond

Domnall Mór was the third son of Toirdhealbhach mac Diarmada Ua Briain, who was also a King of Munster. Domnall became king in 1168 after his older brother, Muirchertach, passed away. Muirchertach had taken over from their father.

Soon after becoming king, Domnall faced challenges. In 1169, he had a conflict with Ruaidrí Ua Conchobair, who was the High King of Ireland. Domnall had to pay Ruaidrí 300 cows as a tribute.

Fighting the Normans

In 1171, Domnall Mór met with King Henry II of England at Cashel. He agreed to accept Henry's authority. However, Domnall continued to bravely fight against the Norman invaders who were trying to take over parts of southwest Ireland.

LimerickCICathedral
The Cathedral of Saint Mary Blessed Virgin, Limerick, founded by Donall O'Brien and also where he is buried.

In 1175, Domnall won a big battle against the Normans at Thurles. This victory helped him become even stronger. He also managed to drive the Normans out of Limerick in 1176. By 1178, he had also pushed out the Uí Fidgenti, who were old rulers of the County Limerick area.

Later Years and Achievements

In 1184, some of Domnall's lands were given to Philip de Braose, an English lord. Philip tried to take Limerick, but he turned back before reaching the city. In 1185, when Prince John of England came to Ireland, Domnall Mór defeated the Normans again. This happened when John was raiding along the River Suir.

Domnall Mór also helped the people of Connacht in 1188. They fought against Jean de Courcy in the Curlew Mountains. In 1193, the Normans attacked Clare and Domnall's lands in Ossory in return.

Domnall Mór was also a supporter of the church. He helped establish two important monasteries:

Both of these were for the Cistercian order of monks.

Domnall Mór Ua Briain passed away in 1194. He is believed to be buried in St Mary's Cathedral, Limerick, a church that he helped to organize. An old stone coffin lid, thought to be his, is still there today.

His Family

Domnall Mór married a woman named Orlacan. She was the daughter of Diarmait Mac Murchada. Domnall and Orlacan had three sons and one daughter. After his death, his sons had their own struggles for power in Thomond.

  • Muirchertach Dall (King of Thomond at different times, died 1239)
  • Conchobar Ruadh (King of Thomond for a short period, died 1202 or 1203)
  • Donnchadh Cairbreach (King of Thomond from 1208 or 1210 to 1242)
  • Mór Ní Briain (who became Queen Consort of Connaught)
  • Another daughter who married William de Burgh

See also

  • O'Brien dynasty

Sources

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