Foulcois was the son of Albert-Azzo II d'Este and Gersende du Maine. The date and place of his birth have not been found.
Albert-Azzo II d'Este |
Albert-Azzo I d'Este |
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Gersende du Maine |
Herbert I du Maine |
Hugues III du Maine |
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Paule de Preuilly |
Gausbert de Preuilly |
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