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Male Duke Guillaume IX of Aquitaine Click to view Duke Guillaume IX of Aquitaine in the family tree

Guillaume IX of Aquitaine was born on October 22nd, 1071 in , Aquitaine, France.  Guillaume IX of Aquitaine's father was Duke Guillaume VI of Aquitaine and his mother was Aldegardeor Hildegarde of Bourgogne.  His paternal grandparents were Duke Guillaume V of Aquitaine and Cts Agnes of Bourgogne; his maternal grandparents were Duke Robert I of Bourgogne and Helie of Semur.  He was an only child.


Guillaume IX of Aquitaine's family with Maud of Toulouse

‌Guillaume IX of Aquitaine and Maud of Toulouse were married in a religious ceremony in 1094.  They had a son and a daughter, named Guillaume X of Aquitaine and Maud Agnes of Aquitaine.

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