Click to expand/collapse all other details

Male Duke William IX deAquitaine Click to view Duke William IX deAquitaine in the family tree

William IX was born on October 22nd, 1071 in Aquitaine,France.  William IX's father was William VIII deAquitaine and his mother was Hildegarde(Aldegarde) (Capet) of Burgundy.  His paternal grandparents were Duke William V deAquitaine and Agnes (Lombard) of Burgundy; his maternal grandfather was Robert I `the Old' (Capet) of Burgundy. He had a half-sister named Agnes.  He died in Poitiers,France.


William IX's family with Regent Philipe Matilde Maud de Toulouse

‌William IX and Philipe Matilde Maud were married in a religious ceremony about 1094.  They had a son and a daughter, named William X and Agnes Maud.

Page last modified