Marie was the daughter of Robert II de Beaumont-Beaussart and Laure de Mauvoisin. The date and place of her birth have not been found.
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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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