Guillaume de Montfort seigneur de Montfort
- Born: 30 Nov 959, Évreux, Eure, Haute-Normandie, France
- Marriage (1): Albérade de Nogent
- Died: 30 Nov 1002, Montfort-l'Amaury, Yvelines, Île-de-France, France aged 43
- Buried: The Monastery of the Trinity of Seincourt Epernon, Departement d'Eure-et-Loir, Centre, France
FamilySearch ID: LVTD-MDD.
Guillaume married Albérade de Nogent, daughter of Hugues De Beauvais, Seigneur de Nogent and Hildegarde Dame du Perche au Mortagne. (Albérade de Nogent was born in 969 and died in 1022 in Y, Somme, Picardie, France.)
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