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

Guillaume Ier was born in 1132.  Guillaume Ier's father was Amédée Ier De Genève and his mother was Mathilde De Cuiseaux.  His paternal grandparents were Aymon Ier De Genève and Ida De Glane; his maternal grandfather was Hugues De Cuiseaux.  He was an only child.  He died at the age of 63 on July 25th, 1195.


Guillaume Ier's family with Marguerite Ou Béatrice De Faucigny

‌Guillaume Ier and Marguerite Ou Béatrice were married in a religious ceremony about 1174.  They had a son and a daughter, named Guillaume II and Marguerite Béatrice Ou Nicole.

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