Isabelle was the daughter of Jean II de Châtillon-Porcéan and Aliénor de Roye. The date and place of her birth have not been found.
Her husband was Guy de Laval. They were married, but the date and place have not been found. They had no known children.
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Jean II de Châtillon-Porcéan |
Gaucher V de Châtillon |
Gaucher IV de Châtillon |
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Isabelle de Villehardouin |
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Isabelle de Dreux |
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Aliénor de Roye |
Mathieu II de Roye |
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Marguerite de Picquigny |
Jean I de Picquigny |
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Marguerite de Beaumez |
| Attribute | Date | Description | Details | Source | Multimedia | Notes |
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| Nobility Title | dame d'Orly-en-Brie et de Beauverger |