See also
1. Robert I, son of Robert II (972- ) and Constance de Toulouse (c. 974- ), was born circa 1011 in Francis. He married Hermengarde de Helie Anjou.
Hermengarde de Helie Anjou was born in 1016 in Anjou. She and Robert I had the following children:
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2. Hildegarde de Hildegarde, daughter of Robert I and Hermengarde de Helie Anjou, was born circa 1037 in Bourgogne. She married William VIII.
William VIII was born in 1026 in Aquitaine. He and Hildegarde de Hildegarde had the following children:
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3. William IX, son of William VIII and Hildegarde de Hildegarde, married Phillippa Mathidle Maude Toulouse.
Phillippa Mathidle Maude Toulouse was born circa 1073 in France. She and William IX had the following children:
| 4 | William X, Duke of Aquitaine (1099- ). William was born in 1099 in Aquitaine. |