William I (Fabour) De Belleme

William I (Fabour) was born about 0965 in , , , Normandy.  William I (Fabour)'s father was Yves (Ives) De Of Alencon Count and his mother was Gohilda (Godenhaute) Of Ponthieu.  His paternal grandfather was Yves De Creil Seigneur and his paternal grandmother is Geile (); his maternal grandparents are Hildouin De Penthieu and Hersenda (). He had a brother and two sisters, named Ivres (Allencon), Godchilde and Godhaut.  He died about 1048.  He was buried about 1048.

They had two sons named William II De and Warin.