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Male Guillaume De Bournonville Click to view Guillaume De Bournonville in the family tree

Guillaume was born in 1040.  Guillaume's father was Eustache Ier De Guines and his mother was Suzanne De Ghermines.  His paternal grandparents were Rodolphe Ier De Guines and Rosella De Saint-Pol; his maternal grandfather was Sigers De Ghermines. He had a brother named Baudouin Ier.  He was the younger of the two children.  He died at the age of 31 in 1071.


Guillaume's family with Adèle De Hesdin

They had a son named Gérard Ier.

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