Isabelle was born about 1058 in Montfort-l'Amaury, Yvelines, Île-de-France, France, the daughter of Simon I de Montfort and Isabelle de Broyes.
She died about 1102 in Flamstead, Hertfordshire, England .
Her husband was Raoul II de Tosny. They were married, but the date and place have not been found. Their three known children were Raoul III (c1078-c1126), Isabelle (?-?) and Godeheut (?-1097).
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Isabelle de Montfort |
Simon I de Montfort |
Amaury I de Montfort |
Guillaume I de Hainaut |
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NN de Nogent |
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Bertrade de Gometz |
Guillaume de Gometz |
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Isabelle de Broyes |
Hugues I Bardoul de Broyes |
Isembart de Broyes |
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Béline |
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Alvide |
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| Event | Date | Details | Source | Multimedia | Notes | ||
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| Birth | ABT 1058 |
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| Death | ABT 1102 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
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| Nobility Title | dame de Nogent |
Note 1