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

Guillaume was born in 1224 in Dampierre, Jura, France.1   Guillaume's father was Guillaume II De Dampierre and his mother was Countess Of Flanders & Hainault Marguerite.  His paternal grandparents were Constable of Champagne Gui II De Dampierre and Mahaut De Bourbon. He had two brothers and three sisters, named Count of Flanders Guy, Jean, Jeanne, Marie and Dame de Bourbon Agnes.  He was the oldest of the six children.

1 Theobald III.ged
Further source/citation:
http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=michaelrneuman&id=I17649

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