Guillaume was the son of Raoul de Coucy and Jeanne d'Harcourt. The date and place of his birth have not been found.
Raoul de Coucy |
Guillaume I de Coucy |
Enguerrand V de Guînes |
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Christine de Lindsay |
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Isabeau de Châtillon-sur-Marne |
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Jeanne d'Harcourt |
Jean V d'Harcourt |
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Blanche de Ponthieu |
Jean II de Ponthieu |
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Catherine d'Artois |
Attribute | Date | Description | Details | Source | Multimedia | Notes |
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Nobility Title | seigneur de Montmirail, etc. |