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Male Guillaume Ier De Montfort Click to view Guillaume Ier De Montfort in the family tree

Guillaume Ier was born in 0970.  Guillaume Ier's father was Amaury De Hainaut and his mother was Judith De Cambrai.  His paternal grandparents were Rainier II De Hainaut and Adélaïde De Bourgogne; his maternal grandparents were Isaac De Valenciennes and Berthe De Cambrai. He had a brother named Raoul.  He was the older of the two children.  He died at the age of 48 in 1018.


Guillaume Ier's family with ? De Nogent

They had a son named Amaury II.

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