Abt 1206 - 1258 (52 years)
 | Sir Reynold de Mohun, III 1225-1278 |
| Sir Reynold de Mohun, III | |
| B: | 1225 |
| D: | 1278 |
| France | |
| Lord of Dunster Sir John de Mohun, III Aft 1258-1330 |
| Lord of Dunster Sir John de Mohun, III | |
| B: | Aft 1258 |
| Dunster, Somerset, England | |
| D: | 25 Aug 1330 |
| Cornwall, England | |
 | Auda de Tibetot 1276-1324 |
| Auda de Tibetot | |
| B: | 1276 |
| Porchester, Nottinghamshire, England | |
| M: | 1319 |
| Dunster, Somerset, England | |
| D: | 1324 |
| Dunster, Somerset, England | |
| John de Mohun, II 1248-1279 |
| John de Mohun, II | |
| B: | 1248 |
| Dunster, Somerset, England | |
| D: | 11 Jun 1279 |
| Dunster, Somerset, England | |
 | Alinora Petri 1252-1283 |
| Alinora Petri | |
| B: | 1252 |
| Breconshire, Wales | |
| M: | 1268 |
| Dunster, Somerset, England | |
| D: | Jan 1283 |
| Blagdon, Somerset, England | |
| 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 |
 | 2nd Baron Grey of Codnor Richard Codnor de Grey Abt 1281-1334 |
| 2nd Baron Grey of Codnor Richard Codnor de Grey | |
| B: | Abt 1281 |
| Codnor, Derbyshire, England | |
| D: | 10 Mar 1334 |
| Codnor, Derbyshire, England | |
 | Joan FitzPayn 1286-1335 |
| Joan FitzPayn | |
| B: | 1286 |
| Codnor, Derbyshire, England | |
| M: | 1300 |
| Monmouthshire, Wales | |
| D: | 18 Oct 1335 |
| Aylesford, Kent, England | |
 | 1st Baron Grey of Codnor Henry de Grey 1256-1308 |
| 1st Baron Grey of Codnor Henry de Grey | |
| B: | 1256 |
| Derbyshire, England | |
| D: | 1 Sep 1308 |
| Aylesford, Kent, England | |
 | Eleanor de Courtenay 1266-1301 |
| Eleanor de Courtenay | |
| B: | 1266 |
| Okehampton, Devon, England | |
| D: | 6 Jun 1301 |
| Codnor, Derbyshire, England | |
| Joan de Somerville 1273-1294 |
| Joan de Somerville | |
| B: | 1273 |
| Nottinghamshire, England | |
| D: | 11 Apr 1294 |
| 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 | |
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.
