William married Maud de Percy before 28 Dec 1175. Maud (daughter of William de Percy, 4th Baron Percy and Alice De Tonbridge de Clare) was born in Catton, Stamford Bridge; died about 1203; was buried in Fountains Abbey. [Group Sheet] [Family Chart]
William married Margaret d'Eivile in 1175. Margaret and died. [Group Sheet] [Family Chart]