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Family/Spouse: Unknown. [Group Sheet] [Family Chart]
Family/Spouse: Margaret De Quency. Margaret (daughter of Roger (2nd Earl of Winchester) De Quincy and Helen De Galloway) and died. [Group Sheet] [Family Chart]
William married Sibyl (Le Mareschal) (of Pembroke) Marshal on 14 May 1219. Sibyl (daughter of William (4th Earl of Pembroke) Marshal and Isabel (Countess Strigoil) De Clare) and died. [Group Sheet] [Family Chart]
William + Agnes De Kevelioch. Agnes was born about 1168; and died. [Group Sheet] [Family Chart]