| Male John I Count Of Ponthieu |
| Birth | 1135 | |
| Death | 1191 | |
| Burial | ||
| Marriage | ||
| Father | Guy II Count Of Ponthieu | F3892 Group Sheet | |
| Mother | Ida | F3892 Group Sheet | |
| Female Beatrice Candavaine De St. Pol |
| Birth | 1135 | |
| Death | 1164 | |
| Burial | ||
| Father | Anselme Candavaine Count Of St. Pol | F3893 Group Sheet | |
| Mother | Eustache De Champagne | F3893 Group Sheet | |
| Male William III Count Of Ponthieu |
| Birth | 1179 | |
| Death | 4 Oct 1221 | |
| Burial | ||
| Spouse | Alix Princess Of France | F3489 | |
| Marriage | 20 Aug 1195 | Meudon, Hauts-DE-Seine, ?le-DE-France, France |