See also
| Husband: | Willliam + of PLESSIS (1157-1225) | |
| Wife: | Aelis + of BREUX (1161-1223) | |
| Children: | Ralph + of PLESSIS (1177- ) | |
| Name: | Willliam + of PLESSIS | |
| Sex: | Male | |
| Father: | Ranulf + of PLESSIS (1130-1195) | |
| Mother: | - | |
| Birth | 1157 | Plessis, Calvados, Normandy, France |
| Death | 1225 (age 67-68) | Plessis, Calvados, Normandy, France |
| Name: | Aelis + of BREUX | |
| Sex: | Female | |
| Father: | - | |
| Mother: | - | |
| Birth | 1161 | Poiteau, Aquitane, France |
| Death | 1223 (age 61-62) | Oxfordshire, England |
| Name: | Ralph + of PLESSIS | |
| Sex: | Male | |
| Spouse: | Margaret + of NEWBURGH (c. 1180- ) | |
| Birth | 1177 | Poitou, Charentes, France |
| Death | Woodstock, Oxfordshire, England | |