Clanwilliam

Clanwilliam was a lordship of the junior Burkes in eastern County Limerick, with its chief seat at Castleconnell. In 1337 Edmond de Burgh, a son of the Earl of Ulster, headed the line.

In 1338 his rival Edmond Albanach Burke seized him and drowned him in Lough Mask with a stone around his neck, but his sept retained the Limerick lands. Sir William Bourke became Baron Bourke of Castleconnell in 1580; the eighth baron was attainted after the Williamite war and the title forfeited in 1691.