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Male Guillaume III Duke Alencon Click to view Guillaume III Duke Alencon in the family tree

Guillaume III Duke was born about 1055.  Guillaume III Duke's father was Robert II de Montgomery and his mother was Agnes de Ponthieu.  His paternal grandparents were Roger de Montgomery and Mabel d' Talvas; his maternal grandparents were Guy I de Ponthieu and Ada de Amiens. He had a brother named WILLIAM III "Talvas" COUNT de.  He died in 1172.


Guillaume III Duke's family with Alice UNKNOWN

They had a son named Guy II de.

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