Jean was born about 1330, the son of Briant de Châteaubriant and Marie de Beaumanoir. The place is not known.
He died about 1380. The place is not known.
His wife was Marie de Montrelais, who he married in 1350. The place has not been found. They had no known children.
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Jean de Châteaubriant |
Briant de Châteaubriant |
Guy de Châteaubriant |
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Marie de Beaumanoir |
Jean III (II) de Beaumanoir |
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Marie de Dinan |
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| Event | Date | Details | Source | Multimedia | Notes |
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| Birth | ABT 1330 |
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| Death | ABT 1380 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
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| Nobility Title | seigneur de Portric |
| Aliases |
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| Jean II de Châteaubriant (seigneur de Porteric) |