William Óg de Burgh

Sir William Óg de Burgh, Anglo-Irish noble and soldier, died 1270.

Sir William Óg was the third son of Richard Mor de Burgh, Lord of Connacht. De Burgh served with distinction in France with King Henry III in 1245 and later in Scotland. He was involved in fierce feudal warfare in Ireland where he killed the Lord of Desmond. He was killed at the Battle of Áth an Chip or Athankip by the Ua Conchobair Kings of Connacht, in 1270.

He was survived by at least one son, Sir William Liath de Burgh, Custos or Warden of Ireland, who married Una, a daughter of the Mac Jordan of Connacht, and died in 1324. William Óg was thus ancestor the Mac William Iochtar, the Bourkes of County Mayo.

Family tree
Walter de Burgh of Burgh Castle, Norfolk. =Alice |  |_____________________________________________________________________________________________________________________   |                                    |                                                |                              |   |                                    |                                                |                              |  William de Burgh, died 1205. Hubert de Burgh, 1st Earl of Kent, d. 1243. Geoffrey de Burgh, d. 1228. Thomas de Burgh |                                       (issue; John and Hubert) |_________________________________________________________________________________________________________  |                                                         |                                             |   |                                                         |                                             |      Richard Mór de Burgh, 1st Baron of Connaught  Hubert de Burgh, Bishop of Limerick, d. 1250. Richard Óge de Burgh |                                                                                                      |   |                                           ____________________________________________________________|  de Burgh Earl of Ulster,                     |                  |               | Burke of Castleconnell, County Limerick     |                  |               | Mac William Iochtar Bourke of County Mayo. Hubert          William            Richard |                 |               |                                               |                  |               |_________________                                                     Clan Mac Hubert? Richard an Fhorbhair    |                | |              |                |   _______________________________________________________________|               Sir David Donn  Sir William Ruad |                                          |         |                            |                    d.1327. |                                          |         |                   Clan Mac David Ulick Burke of Annaghkeen, d. 1343. Raymond Walter Óge |  |   Richard Óg Burke, d. 1387. |  |   Ulick an Fhiona Burke of Clanricarde