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

Guillaume Ier de was born in 1130 in ,,,France.1   Guillaume Ier de's father was Guy I de Dampierre and his mother was Helvide de Baudemont.  His paternal grandparents were Seigneur Of Dampierre Thibaut and Isabeau De Montlhéry; his maternal grandparents were Seigneur Of Baudemont Andre and Agnes De Braine. He had a sister named Helvide De.  He was the older of the two children.  He died before 1162.1 


Guillaume Ier de's family with Irmengarde de Mouchy

‌Guillaume Ier de and Irmengarde de were married in a religious ceremony in 1154.1   They had a son named Guy II.

1 Joanne's Tree.1 GED.GED
Further source/citation:
daveanthes.FTW

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