Guillaume was the son of Mathieu III de Montmorency and Jeanne de Brienne-Ramerupt. The date and place of his birth have not been found.
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Mathieu III de Montmorency |
Bouchard V de Montmorency |
Mathieu II de Montmorency |
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Gertrude de Nesle |
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Isabelle de Laval |
Guy V de Laval |
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Avoise de Craon |
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Jeanne de Brienne-Ramerupt |
Érard de Brienne |
André de Brienne |
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Adélaïs de Trainel-Vénisy |
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Philippa de Champagne |
Henri II de Champagne |
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Isabelle de Jérusalem |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | chevalier de l'Ordre du temple |