Blanche was the daughter of Jean I d'Harcourt and Alix de Beaumont-Gâtinais. The date and place of her birth have not been found.
Her husband was Pierre de Bailleul. They were married, but the date and place have not been found. They had no known children.
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Jean I d'Harcourt |
Richard d'Harcourt |
Robert II d'Harcourt |
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Jeanne |
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Mathilde Tesson |
Raoul Tesson |
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Mathilde de Patry |
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Alix de Beaumont-Gâtinais |
Jean de Beaumont-Gâtinais |
Adam de Beaumont-Gâtinais |
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Alix le Riche |
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Alix de Villemomble |
Robert de Mauvoisin |
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Cécile de Chevreuse |