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Male III Guillaume Click to view III Guillaume in the family tree

III was born in 0969 in Poitou,FRANCE.1   III's father was IV, Duke of Aquitaine Poitiers William and his mother was Emma De Blois.  His paternal grandparents were UNKNOWN William III and Adela , Countess Of Poitou Gerloc; his maternal grandparents were II, Le Tricheur Thibaud and Luitgarde Vermandois. He had a brother named Count Of Poitou. He had a half-sister named UNKNOWN.  He died in FRANCE.


III's family with Agnes Of Burgundy

‌III and Agnes Of were married in a religious ceremony about 1019.  They had a son and a daughter, named UNKNOWN and Agnes Princess of the Holy Roman.

1 Brøderbund WFT Vol. 1, Ed. 1, Tree #1142, Date of Import: Apr 27, 1996
Further sources/citations:
GEDCOM File : 46438.ged, GEDCOM File : rowland2.ged