1172 - 1240 (68 years)
 | 2nd Baron Mortimer Edmund Mortimer, I 1251-1304 |
| 2nd Baron Mortimer Edmund Mortimer, I | |
| B: | 1251 |
| Hertfordshire, England | |
| D: | 17 Jul 1304 |
| Wigmore, Herefordshire, England | |
 | Margaret de Fiennes 1262-1332 |
| Margaret de Fiennes | |
| B: | 1262 |
| Wigmore, Herefordshire, England | |
| M: | 1285 |
| Fiennes, Pas-de-Calais, Nord-Pas-de-Calais, France | |
| D: | 7 Feb 1332 |
| England | |
| 1st Baron Wigmore Roger Mortimer, II 1231-1282 |
| 1st Baron Wigmore Roger Mortimer, II | |
| B: | 1231 |
| Radnorshire, Wales | |
| D: | 30 Oct 1282 |
| Builth, Breconshire, Wales | |
 | Maud de Braose 1226-1301 |
| Maud de Braose | |
| B: | 1226 |
| Gowerton, Glamorgan, Wales | |
| D: | 1301 |
| Herefordshire, England | |
| Princess of North Wales Gwladus verch Llywelyn | |
| B: | 1205 |
| Gwynedd, Wales | |
| D: | 1251 |
| Wales | |
| Ralph de Mortimer Bef 1198-Bef 1246 |
| Ralph de Mortimer | |
| B: | Bef 1198 |
| Wigmore, Herefordshire, England | |
| M: | 1230 |
| D: | Bef 2 Oct 1246 |
| Wigmore, Herefordshire, England | |
|
| Prince of North Wales and Lord of Snowdonia Llywelyn ap Lorwerth | |
| B: | 1172 |
| Caernarvonshire, Wales | |
| D: | 11 Apr 1240 |
| Caernarvonshire, Wales | |
| Lady of Wales and Snowdon Lady Joan Plantagenet | |
| B: | 1191 |
| M: | 1205 |
| D: | 2 Feb 1237 |
We make every effort to document our research. There is a lot of information that I do not have, and I know there are mistakes in this tree. My feelings will not be hurt if you give me corrections or additional information, especially if you can provide sources for the information.
