William Donn de Burgh, 3rd Earl of Ulster
| William de Burgh, 3rd Earl of Ulster | |
|---|---|
| Spouse(s) | Matilda of Lancaster |
| Noble family | Burke |
| Father | John de Burgh |
| Mother | Elizabeth de Clare |
| Born | 13 September 1312 |
| Died | 6 June 1333 (aged 20) |
William de Burgh, 3rd Earl of Ulster and 4th Baron of Connaught (17 September 1312 – 6 June 1333), was an in the Peerage of Ireland.
The grandson of the 2nd Earl Richard Óg de Burgh via his second son, John, William de Burgh was also Lord of Connaught in Ireland, and held the manor of Clare, Suffolk.
He was summoned to Parliament from 10 December 1327 to 15 June 1328 by writs addressed to Willelmo de Burgh. In 1331 he was appointed Lieutenant of Ireland for a year.
The 3rd Earl of Ulster married, before 16 November 1327 (by a Papal Dispensation dated 1 May 1327), Maud of Lancaster, daughter of Henry, 3rd Earl of Lancaster and Maud Chaworth. They had one child, Elizabeth de Burgh, 4th Countess of Ulster. She married Lionel of Antwerp, third son of Edward III of England.
In November 1332, at Greencastle, near the mouth of Lough Foyle, he had his cousin Sir Walter Liath de Burgh starved to death. In revenge, Sir Walter's sister, Gylle de Burgh, wife of Sir Richard de Mandeville, planned his assassination.
In June 1333, he was killed by de Mandeville, Sir John de Logan, and others. The Annals of the Four Masters noted that William Burke, Earl of Ulster, was killed by the English of Ulster. The Englishmen who committed this deed were put to death, in divers ways, by the people of the King of England; some were hanged, others killed, and others torn asunder, in revenge of his death.
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