Mahaut was the daughter of Conan I de Penthièvre and Aliénor de Quimper-Guezennec. The date and place of her birth have not been found.
Her husband was Jehan I du Liscoët, who she married in 1204. The place has not been found. They had no known children.
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Conan I de Penthièvre |
Henri I d'Avaugour |
Étienne I de Penthièvre |
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Havoise de Guingamp |
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Mathilde de Vendôme |
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Aliénor de Quimper-Guezennec |
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