1224 - 1272 (48 years)
 | Sir Robert FitzPayne de Grey 1321-1393 |
| Sir Robert FitzPayne de Grey | |
| B: | 1321 |
| Somerset, England | |
| D: | 31 May 1393 |
| Somerset, England | |
 | Elizabeth de Brienne 1334-1393 |
| Elizabeth de Brienne | |
| B: | 1334 |
| Pembrokeshire, Wales | |
| M: | 16 Oct 1354 |
| Walwyn's Castle, Pembrokeshire, Wales | |
| D: | 21 May 1393 |
| Taunton, Somerset, 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 | |
| Sir John de Grey 1224-1272 |
| Sir John de Grey | |
| B: | 1224 |
| Codnor, Derbyshire, England | |
| D: | 5 Jan 1272 |
| Aylesford, Kent, England | |
 | Lucy de Mohun 1226-1282 |
| Lucy de Mohun | |
| B: | 1226 |
| Dunster, Somerset, England | |
| D: | 24 May 1282 |
| Derby, Derbyshire, 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.
