Lord of Skipton, Yorkshire and Cecily de Rumigny William Le Meschin
(Notes: You may have to scroll down or right to see chart.)
| Ralph De Mortimer | |
| B: | Bef 1198 |
| D: | Bef 2 Oct 1246 |
| Gwladus Ferch Llywelyn | |
| B: | 1206 |
| D: | 1251 |
| Joane Mortimer | |
| B: | Abt 1194 |
| England | |
| D: | 1268 |
| Walcheline Beauchamp | |
| B: | Abt 1184 |
| England | |
| D: | 14 Apr 1236 |
| Hugh De Mortimer | |
| D: | 1227 |
| Roger De Mortimer | |
| B: | Bef 1153 |
| D: | Bef 8 Jul 1214 |
| Isabel De Ferrers | |
| D: | Bef 29 Apr 1252 |
| Hugh De Mortimer | |
| B: | Bef 1117 |
| D: | 26 Feb 1181 |
