Beatrix was born about 1330, the daughter of Robert II de Beaumont-Beaussart and Laure de Mauvoisin. The place is not known.
She died after 09 AUG 1410. The place is not known.
Her husband was Hugues de Melun, who she married on 10 NOV 1378. The place has not been found. Their five known children were Catherine (c1370-?), Marguerite (c1375-?), Philippe (c1382-1421), Jean (?-1484) and Catherine (?-?).
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Beatrix de Beaumont-Beaussart |
Robert II de Beaumont-Beaussart |
Robert I Brunel de Wavrin |
Robert II de Wavrin |
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Mathilde de Béthune |
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Marie de Roye |
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Laure de Mauvoisin |
Guy VII de Mauvoisin |
Guy VI de Mauvoisin |
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Laure de Ponthieu |
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Roberte de Beaumez |
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| Event | Date | Details | Source | Multimedia | Notes |
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| Birth | ABT 1330 |
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| Death | AFT 9 AUG 1410 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
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| Nobility Title | dame de Croisilles |