Marie was born about 1305, the daughter of Jean III (II) de Beaumanoir and Marie de Dinan. The place is not known.
Her husband was Briant de Châteaubriant. They were married, but the date and place have not been found. Their two known children were Bertrand (?->1398) and Jean (c1330-c1380).
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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 1305 |
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