| Male Simon II de Dammartin, Count of Aumale |
| Birth | About 1180 | |
| Death | 21 Sep 1239 | Abbeville, Somme, Hauts-de-France, France |
| Burial | Aft 21 Sep 1239 | Valloire, Auvergne-Rhône-Alpes, France |
| Marriage | Sep 1208 [1, 2, 3] | |
| Father | Alberic III de Dammartin, Count of Dammartin and Île-de-France | F6220 Group Sheet | |
| Mother | Mathilda of Ponthieu | F6220 Group Sheet | |
| Female Marie of Ponthieu, Countess of Ponthieu and Montreuil |
| Birth | 17 Apr 1199 | France |
| Death | Sep 1250 | France |
| Burial | ||
| Other Spouse | Matthew de Montgomery, Seigneur de Montmorency | F6221 | |
| Marriage | ||
| Father | William III Talvas, Count of Ponthieu and Montreuil | F4151 Group Sheet | |
| Mother | Alys of France, Countess of Vexin | F4151 Group Sheet | |
+ Jeanne de Dammartin, Countess of Ponthieu |
| Birth | Between 1208 and 1220 | |
| Death | 16 Mar 1279 | Abbeville, Somme, Hauts-de-France, France |
| Burial | Aft 16 Mar 1279 | Valloires Abbey, Argoules, Hauts-de-France, France![]() Valloires Abbey, Argoules, Hauts-de-France, France |
| Spouse | Saint Ferdinand III, King of Castile and Léon | F2199 | |
| Marriage | 1237 | Burgos, Castile and León, Spain |
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Sources 🟢 Primary Evidence 🟡 Secondary Evidence 🟠 Tertiary Evidence 🔴 Unreliable Evidence |
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