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Male Guillaume I de Dampierre Click to view Guillaume I de Dampierre in the family tree

Guillaume I was born in 1126 in Dampierre, Jura, France.  Guillaume I's father was Guy I de Dampierre and his mother was Helvide de Baudemont.  His paternal grandparents were Thibault de Dampierre and Isabel de Montlhery; his maternal grandparents were Andre de Baudemont and Agnes. He had two sisters named Agnes and Helvide.  He was the oldest of the three children.  He died at the age of 35 in 1161.


Guillaume I's family with Ermengarde De Mouchy

They had a son named Gui II.

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