Jean was the son of Gilles II de Mailly and Jeanne d'Amiens. The date and place of his birth have not been found.
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Gilles II de Mailly |
Gilles I de Mailly |
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Ermogie Amélie de Beaumont |
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Amicie de Heilly |
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Jeanne d'Amiens |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
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| Nobility Title | FROM 1290 TO 1300 | seigneur de Nédon |