| William III Talvas, Count of Ponthieu and Montreuil | |
| B: | 1179 |
| France | |
| D: | 4 Oct 1221 |
| France | |
1160-1220
| Alys of France, Countess of Vexin | |
| B: | 4 Oct 1160 |
| France | |
| M: | 20 Aug 1195 |
| Meudon, Île-de-France, France | |
| D: | About 1220 |
| Thomas de St. Vallery | |
| M: | 1178 |
1160-
| Beatrice of Saint Pol | |
| B: | About 1160 |
1140-1191
| Jean I, Count of Ponthieu and Montreuil | |
| B: | About 1140 |
| M: | by 1177 |
| D: | 30 Jun 1191 |
| Acre, Holy Land | |
| Anselme Candavene, Count of St. Pol | |
| D: | 1174 |
|
Abt 1129-1153
| Eustace IV, Count of Boulogne | |
| B: | Abt 1129 |
| D: | 10 Aug 1153 |
| Constance | |
| M: | Feb 1140 |
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