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Male Guillaume De Dampierre Click to view Guillaume De Dampierre in the family tree

Guillaume De was born about 1224 in Of,Dampierre,Jura,France.  Guillaume De's father was Guillaume II Seigneur De Dampierre and his mother was Margaret II Cts de Flanders.  His paternal grandparents were Guy II De Dampierre and Mathilde de Bourbon; his maternal grandparents were Baudouin IX Ct of Flanders and Marie de Champagne. He had two brothers and two sisters, named Guy de Dampierre Count of, Jean De, Jeanne De and Marie De.  He was the oldest of the five children. He had two half-brothers and a half-sister, named Baudouin Count Of, Jean I De and Isabell.  He died on June 6th, 1251.

Sources/Citations
Ancestral File (R), Ancestral File (TM)

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