Isabeau was the daughter of Gaucher de Châtillon-sur-Marne and Marie de Coucy. The date and place of her birth have not been found.
Her husband was Jean IV de Courtenay. They were married, but the date and place have not been found. They had no known children.
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Gaucher de Châtillon-sur-Marne |
Guy de Châtillon-sur-Marne |
Gaucher V de Châtillon |
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Hélissente de Vergy |
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Marie de Lorraine |
Thiébaud II de Lorraine |
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Isabelle de Rumigny |
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Marie de Coucy |
Enguerrand de Coucy |
Enguerrand V de Guînes |
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Christine de Lindsay |
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Marie de Vienne |
Fillips II van Vianden |
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Marie de Cernay |