Isabelle was the daughter of Guillaume III dit Lyonnel de Chaumont and Robine de Montagu. The date and place of her birth have not been found.
Her husband was Jacques d'Auxy, who she married on 16 JAN 1414. The place has not been found. They had no known children.
Richard de Chaumont |
Renaud II de Chaumont |
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Jeanne de Fours |
Jean de Fours |
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Isabelle de Courtenay |
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Robine de Montagu |
Gérard de Montagu |
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Biette de Cassinel |
François de Cassinel |
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