| Count Jean I of Ponthieu & Montreuil & Beatrice de Saint Pol | |
| Husband | Wife |
| Count Jean I of Ponthieu & Montreuil | Beatrice de Saint Pol |
|
b: 1135 Montreuil, Flandres, France d: 1191 |
b: about 1135 Saint Poi, France |
| Marriage: before 1179. | |
| Parents | |
| Count Guy II of Ponthieu (~1090 - 1147) | Anselme de Saint Pol (~1090 - 1174) |
| Ida de Saint Pol (~1090 - ) | Eustache de Champagne (~1090 - ) |
| Grand Parents | |
| Duke Guillaume III D'Alencon (~1055 - 1172) | Count Hugues III de Saint Pol (~1068 - ) |
| Countess Alice "Helia" de Bourgogne (~1055 - 1191) | Beatrix (~1070 - ) |
| Children (Family Detail) | |
| Count Guillaume III of Ponthieu | - b: 1179 Ponthieu, Flanders, France |