| Male Jean I, Count of Ponthieu and Montreuil |
| Birth | About 1140 | |
| Death | 30 Jun 1191 | Acre, Holy Land |
| Burial | ||
| Marriage | Yes, date unknown [1] | |
| Other Spouse | daughter of Bernhard of St. Valerie | F8375 | |
| Marriage | Yes, date unknown | |
| Other Spouse | Beatrice of Saint Pol | F4153 | |
| Marriage | by 1177 | |
| Father | Gui II de Ponthieu, Comte de Ponthieu | F4154 Group Sheet | |
| Mother | Ida | F4154 Group Sheet | |
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Sources 🟢 Primary Evidence 🟡 Secondary Evidence 🟠Tertiary Evidence 🔴 Unreliable Evidence |
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