Geoffroy was born in 1237, the son of Geoffroy V de Châteaubriant and Sibylle de la Guerche. The place is not known.
He died on 31 OCT 1284. The place is not known.
He had two marriages/partners. His first wife was Belle-Assez de Thouars, who he married on 2 JUL 1247. The place has not been found. They had no known children.
His second wife was Marguerite de Lusignan, who he married in 1269. The place has not been found. They had no known children.
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Geoffroy VI de Châteaubriant |
Geoffroy V de Châteaubriant |
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Sibylle de la Guerche |
Guillaume III de la Guerche |
Geoffroy III de la Guerche |
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Hersende de Sillé-le-Guillaume |
Guillaume III de Sillé-le-Guillaume |
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| Event | Date | Details | Source | Multimedia | Notes |
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| Birth | 1237 |
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| Death | 31 OCT 1284 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
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| Nobility Title | baron de Châteaubriant | |||||
| Nobility Title | seigneur de Candé, de Vioreau et de Chanzeaux |