| Conflict: | Burke Civil War |
| Date: | 1333 – 1338 |
| Place: | England, Ireland |
| Result: | Loss of almost all de Burgh lands of Ulster; and division of the family into 3 clans. |
| Combatant1: | William Donn de Burgh, 3rd Earl of Ulster |
| Combatant3: | Edmond Albanach de Burgh |
| Combatant4: | Uilleag de Burgh |
The Burke/de Burgh Civil War was a conflict in Ireland from 1333 to 1338 between three leading members of the de Burgh (Burke/Bourke) Anglo-Norman family resulting in the division into three clans.
Twenty-year-old William Donn de Burgh, 3rd Earl of Ulster, known as "the Brown Earl", was murdered by his household knights in June 1333 after he had starved to death his cousin and rival Sir Walter Liath de Burgh in the previous year (1332). The Earl's only child, Elizabeth de Burgh (1332–1363), succeeded as Countess of Ulster and legal heir to the de Burgh estates as an infant. For safety, as an infant and a female heiress, she was taken by her mother to England as her lordships collapsed in a power struggle.[1] [2]
Three members of the de Burgh family fought against each other in an attempt to preserve their own personal estates, and hold overall control of the massive de Burgh inheritance in Ireland. They were:
The eventual outcome of the war was the loss of almost all the de Burgh lands in Ulster, which was reconquered within a year by the Gaelic-Irish.[3] [4]
The remaining de Burghs in Ireland fragmented into three distinct clans, all of which had several sub-septs. They were: