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Male Osbern FitzOsbern Click to view Osbern FitzOsbern in the family tree

Osbern was born before 1040.  Osbern'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 William, William FitzOsbern and Emma.

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