| Male Everhard Radulf III van Mortagne |
| Birth | ||
| Death | ||
| Burial | ||
| Marriage | ||
| Father | Everhard II van Mortagne | F2505 Group Sheet | |
| Mother | Richildis van Henegouwen | F2505 Group Sheet | |
| Female Mathilde van Béthune |
| Birth | ||
| Death | ||
| Burial | ||
| Father | Willem I van Béthune | F2042 Group Sheet | |
| Mother | Clementia van Oisy | F2042 Group Sheet | |
| Female + Richildis van Montagne |
| Birth | Abt 1160 | |
| Death | a 1219 | |
| Burial | ||
| Spouse | Giselbert van Oudenaerde | F2715 | |
| Marriage | ||
| Spouse | Wouter van Sotteghem | F2716 | |
| Marriage | ||