Jeanne was the daughter of Eudes III de Porhoët and Eléonore de Léon. The date and place of her birth have not been found.
She died in 1279. The place is not known.
Her husband was Olivier II de Montauban. They were married, but the date and place have not been found. Their only known child was Olivier III (?-1302).
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Jeanne de Porhoët |
Eudes III de Porhoët |
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Eléonore de Léon |
Guyomarch IV (VI) de Léon |
Hervé II de Léon |
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Marie de Blois |
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Nobilis de Penthièvre-Tréguier |
Henri I d'Avaugour |
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Mathilde de Vendôme |
| Event | Date | Details | Source | Multimedia | Notes |
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| Death | 1279 |
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