Guillaume was the son of Mathieu de Montmorency and Mathilde de Garlande. The date and place of his birth have not been found.
He died in NOV 1221. The place is not known.
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Guillaume de Marly |
Mathieu de Montmorency |
Mathieu I de Montmorency |
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Henri I de Normandie |
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Mathilde de Garlande |
Guillaume IV de Garlande |
Guillaume III de Garlande |
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Agnès de Crépy |
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Idoine de Chaumont |
Guillaume II de Chaumont |
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Marguerite de Gisors |
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| Event | Date | Details | Source | Multimedia | Notes |
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| Death | NOV 1221 |
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