Clanwilliam (Irish: Clann Liam[1]) is a barony in County Limerick,Ireland.[1] According to Patrick Weston Joyce, the name Clanwilliam derives from the descendants (clan) of William de Burgh, founder of the Burke dynasty; similarly for the Tipperary barony of Clanwilliam.[2]
Clanwilliam is bordered by the baronies of Owneybeg to the east, Coonagh to the southeast, and Smallcounty to the south;[3] to the west are Pubblebrien, Limerick City and the North Liberties.[3] To the north across the River Shannon is County Clare; to the northeast is County Tipperary.[3]
Settlements in the barony include Castleconnell,[4] Caherconlish,[4] Garryowen,[5] Barringtonsbridge,[5] Janesboro,[6] and Monaleen.[6]