Isabelle was the daughter of Plivain de Pise and Lucie Dorel. The date and place of her birth have not been found.
Her husband was Bohémond III de Poitiers, who she married in 1199. The place has not been found. Their only known child was Bohémond (?-1244).
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Guillaume I Dorel |
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Étienette de Milly |
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Note 1
nièce de Gautier Durus-le Dur