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Male Seigneur Guillaume de Dampierre II Click to view Seigneur Guillaume de Dampierre II in the family tree

Guillaume was born in 1198 in Dampierre, France.1   Guillaume's father was Guy de Dampierre II and his mother was Mahaut de Bourbon.  His paternal grandparents were William de Dampierre II and Ermengarde Basilie de Mouchy; his maternal grandparents were Archambaud de Bourbon VII and Alix of Burgundy. He had a brother named Archambault.  He was the younger of the two children.  He died at the age of 43 on September 3rd, 1241.1 

Family Details of Guillaume's family with Countess of Flanders & Hainault Margaret of Flanders

1 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=bevangenealogy&id=I33349&style=TABLE
Further source/citation:
http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=bevangenealogy&id=I33360

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