Geoffroy was the son of Geoffroy VII de Châteaubriant and Isabeau de Machecoul. The date and place of his birth have not been found.
He had two marriages/partners. His first wife was Eustache de Thouars. They were married, but the date and place have not been found. They had no known children.
His second wife was Jeanne de Belleville-sur-Vie. They were married, but the date and place have not been found. They had no known children.
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Geoffroy VII de Châteaubriant |
Geoffroy VI de Châteaubriant |
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Isabeau de Machecoul |
Olivier I de Machecoul |
Pierre I de Dreux |
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Marguerite de Montaigu |
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Eustachie de Vitré |
André III de Vitré |
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Thomasse de la Guerche |
| Attribute | Date | Description | Details | Source | Multimedia | Notes |
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| Nobility Title | baron de Châteaubriant | |||||
| Nobility Title | seigneur de Vioreau, de Candé, de Challain et des Huguetières |