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Male William* IX Duke De Aquitaine Click to view William* IX Duke De Aquitaine in the family tree

William* IX Duke was born on October 22nd, 1071 in Aquitaine, France.1   William* IX Duke's father was William* VIII Duke De Aquitaine and his mother was Hildegarde* De Burgundy.  His paternal grandparents were William* V Duke De Aquitaine and Agnes* De Burgundy; his maternal grandparents were Robert* "Le Vieux" Duke De Burgundy and Helie* De Semur.  He was an only child.  He died in France.1 


William* IX Duke's first family with Philippa* (Mathilde) De Toulouse

‌William* IX Duke and Philippa* (Mathilde) were married in a religious ceremony in 1094 in France.1   They had two sons named William* X Duke and RAIMOND I (Prince).


William* IX Duke's second family with MAUD de TOULOUSE

They had a son and a daughter, named AIMAR I (Count) and MATHILDA (Agnes).

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