Isabeau was the daughter of Raoul III d'Ailly and Jacqueline de Béthune. The date and place of her birth have not been found.
Her husband was Alard de Rabodanges. They were married, but the date and place have not been found. They had no known children.
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Raoul III d'Ailly |
Bauduin d’Ailly |
Robert III d’Ailly |
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Marie-Marguerite de Picquigny |
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Jeanne de Raineval |
Waleran de Raineval |
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Jeanne de Varennes |
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Jacqueline de Béthune |
Robert VIII de Béthune |
Jean I de Béthune |
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Jeanne de Coucy |
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Jean III de Barbançon |
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Jolande de Gâvre |
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