Isabel was the daughter of Juan IV Núñez de Lara and María II Díaz de Haro. The date and place of her birth have not been found.
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Juan IV Núñez de Lara |
Fernando II de la Cerda |
Fernando I de la Cerda |
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Blanche Capet |
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Juana Núñez de Lara |
Juan I Núñez de Lara |
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María II Díaz de Haro |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
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| Nobility Title | seigneure de Biscaye |