Ireland), Hubert de Burgh (who, as Chief Justiciar of England and Ireland, was created Earl of Kent), and Geoffrey de Burgh (who became Bishop of Ely). The Kent Earldom became extinct on Hubert's death, and his family passed into relative obscurity until one line (Baron Burgh) was ennobled in the later 15th/early sixteenth century. William gave rise to one of the most prominent Anglo-Irish families of the later Middle Ages. Descendant of Hubert de Burgh, Earl of Kent (d. before 1243) The grant of the Earldom of Kent to Hubert was limited to himself and any male heirs born to his final wife, Princess Margaret of Scotland, but their only child was a daughter who was herself childless. Hubert's sons, John and Hubert, inherited his lands, the latter thought to be ancestor Thomas Burgh of Gainsborough, Lincolnshire, who in 1487 was summoned to Parliament as Baron Burgh (or Borough) of Gainsborough. Thomas, 3rd Baron was Lord Deputy of Ireland (1597), and his younger brother, Sir John (d. 1594), was a distinguished soldier and sailor. The 6th Baron died as a young child in 1602, and the barony fell into abeyance among four his sisters. Descendants of William de Burgh (d. 1206) William de Burgh (d. 1206) received a grant of lands from King John (1189). At John's accession (1199) he was installed in Thomond and became Governor of Limerick. Between 1199 and 1201 he was supporting, in turn, Cathal Carrach and Cathal Crovderg for the native throne, but William was expelled from Limerick (1203) and, lost his Connaught (though not Munster) estates. William married a daughter of Domnall Mór Ó Briain (O'Brien), King of Thomond, King of Limerick, and claimant to the Kingdom of Munster (a descendant of Brian Boru and the O'Brien dynasty). Lords of Connaught William's son, Richard Mór de Burgh, 1st Lord of Connaught (d. 1243), received the land of "Connok" (Connaught) as forfeited by its king, whom he helped to fight (1227). He was Justiciar of Ireland (1228–32). In 1234, he sided with the crown against Richard, Earl Marshal, who fell in battle against him. Richard Mór's eldest son, Sir Richard de Burgh (d. 1248) succeeded him, briefly, as Lord of Connaught. Earls of Ulster Richard Mór's second son, Walter de Burgh (d. 1271), continued warfare against the native chieftains and added greatly to his vast domains by obtaining, from Prince Edward, a grant of "the