1165 - 1201 (36 years)
 | Sir Reynold de Mohun, III 1225-1278 |
| Sir Reynold de Mohun, III | |
| B: | 1225 |
| D: | 1278 |
| France | |
 | Knight of Munster John de Mohun, I 1232-1253 |
| Knight of Munster John de Mohun, I | |
| B: | 1232 |
| Dunster, Somerset, England | |
| D: | 1253 |
| Dunster, Somerset, England | |
 | Joan de Ferrers Abt 1233- |
| Joan de Ferrers | |
| B: | Abt 1233 |
| Derbyshire, England | |
| M: | Abt 1245 |
| Derby, Derbyshire, England | |
| D: | Addington, Surrey, England |
| Lucy de Mohun 1226-1282 |
| Lucy de Mohun | |
| B: | 1226 |
| Dunster, Somerset, England | |
| D: | 24 May 1282 |
| Derby, Derbyshire, England | |
 | Sir John de Grey 1224-1272 |
| Sir John de Grey | |
| B: | 1224 |
| Codnor, Derbyshire, England | |
| D: | 5 Jan 1272 |
| Aylesford, Kent, England | |
| 5th Baron of Dunster Sir Reynold de Mohun, II Abt 1206-1258 |
| 5th Baron of Dunster Sir Reynold de Mohun, II | |
| B: | Abt 1206 |
| Dunster, Somerset, England | |
| D: | 20 Jan 1258 |
| Devon, England | |
| Lady of Streatley and Dunster Lady Hawise FitzGeoffrey | |
| B: | 1210 |
| Shere, Surrey, England | |
| M: | 1227 |
| Dunster, Somerset, England | |
| D: | 8 Aug 1247 |
| Earls Colne, Essex, England | |
| Earl of Somerset, 4th Baron of Dunster Sir Reynold de Mohun, I | |
| B: | Apr 1183 |
| Somerset, England | |
| D: | Apr 1213 |
| Somerset, England | |
| Baroness of Dunster Lady Isabel Alice de Briwere | |
| B: | 1184 |
| Dunster, Somerset, England | |
| M: | 1205 |
| Somerset, England | |
| D: | 10 Jun 1233 |
| Surrey, England | |
| Lucy of Cambridge 1165-1201 |
| Lucy of Cambridge | |
| B: | 1165 |
| Dunster, Somerset, England | |
| D: | 1201 |
| Dunster, Somerset, England | |
 | 3rd Lord of Dunster William Mohun, IV 1156-1193 |
| 3rd Lord of Dunster William Mohun, IV | |
| B: | Apr 1156 |
| Somerset, England | |
| M: | 1179 |
| Wiltshire, England | |
| D: | Oct 1193 |
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.
