Guillaume was the son of Raoul VIII de Montfort and Isabeau de la Roche-Bernard. The date and place of his birth have not been found.
He died on 27 SEP 1432. The place is not known.
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Guillaume de Montfort |
Raoul VIII de Montfort |
Raoul VII de Montfort |
Geoffroi III de Montfort |
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Jeanne le Boeuf de Nozay |
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Aliénor d'Ancenis |
Geoffroy VIII Guillaume d'Ancenis |
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Jeanne de Pressigny |
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Isabeau de la Roche-Bernard |
Eudes III de la Roche-Bernard |
Péan de la Roche-Bernard |
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Isabeau de Laval |
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Béatrice de Craon |
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| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Death | 27 SEP 1432 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | 1423 | évêque de Saint-Malo | ||||
| Nobility Title | cardinal |