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Male William FitzOsbern de Breteuil Click to view William FitzOsbern de Breteuil in the family tree

William FitzOsbern's father was Osbern FitzHerfast de Crepon of Normandy and his mother was Emma de Ivry.  His paternal grandfather was Herfast de Crepon; his maternal grandfather was Raoul de Ivrea and his maternal grandmother is Erneburge de Caux. He had two brothers and a sister, named Osbern, William and Emma.  He died after 1050.


William FitzOsbern's first family with Adeliza de Toeni

They had two sons and a daughter, named Roger, William and Emma FitzOsbern.


William FitzOsbern's second family with Richilde von Egisheim


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