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

Guillaume Ier was born in 1180.  Guillaume Ier's father was Enguerrand Ier De Fiennes and his mother was Sibylle De Tingry.  His paternal grandparents were Eustache II Le Vieil De Fiennes and Jeanne De Sainte-Aldegonde; his maternal grandparents were Guillaume Ferramus De Tingry and Béatrix De Guines.  He was an only child.  He died at the age of 53 in 1233.


Guillaume Ier's family with Agnès De Dammartin

They had a son named Enguerrand II.

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