Marriage Information:

William married Basilia FLAITEL, daughter of Géraud FLAITEL and Herleva D' EVREUX. (Basilia FLAITEL was born in Ecouche Castle, Falaise, Calvados, Normandy, France, died on 16 Jan 1099-1100 in Gournay-en-Bray, Seine-Inferieure, Normandy, France and was buried in Abbey Of Bec, Normandy, France.)