Nielsen Hayden genealogy
Family: Guy-Geoffrey of Poitou / Hildegarde of Burgundy (F3924)
m. 1069William III of Poitou (969-1030) 
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Agnes of Burgundy (995-1068)
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William VII (1023-1058)  |
| Agnes of Poitou (1025-1077) |
| Béatrice de Poitou (1028- ) |
| Robert I (1011-1075)
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| Ermengarde of Anjou (1018-1076)
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| Guy-Geoffrey of Poitou (1024-1086)
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| Hildegarde of Burgundy (1050-1105)
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| William IX of Aquitaine (1071-1126) |