Abt 1163 - Bef 1235 (~ 72 years)
 | Lucy de Ros Abt 1272- |
| Lucy de Ros | |
| B: | Abt 1272 |
| England | |
| Sir Robert Plumpton Abt 1262-Abt 1326 |
| Sir Robert Plumpton | |
| B: | Abt 1262 |
| Yorkshire, England | |
| M: | 1307 |
| England | |
| D: | Abt 1326 |
| Yorkshire, England | |
| Ivette de Ros Abt 1285- |
| Ivette de Ros | |
| B: | Abt 1285 |
| Ingmanthorpe, Yorkshire, England | |
| Sir Geoffrey le Scrope 1285-Abt 1340 |
| Sir Geoffrey le Scrope | |
| B: | 1285 |
| Bolton, Yorkshire, England | |
| D: | Abt 02 Dec 1340 |
| Ghent, Belgium | |
| Sir William de Roos of Ingmanthorpe Sir William de Ros Abt 1244-Bef 1310 |
| Sir William de Roos of Ingmanthorpe Sir William de Ros | |
| B: | Abt 1244 |
| England | |
| D: | Bef 28 May 1310 |
| York, Yorkshire, England | |
| Eustache FitzRalph Abt 1240-Bef 1309 |
| Eustache FitzRalph | |
| B: | Abt 1240 |
| Ingmanthorpe, Yorkshire, England | |
| M: | 1268 |
| England | |
| D: | Bef 1309 |
| Yorkshire, England | |
| 1st Baron de Ros Robert de Ros | |
| D: | 1285 |
| Lucy Fitzpiers 1204-Aft 1266 |
| Lucy Fitzpiers | |
| B: | 1204 |
| Helmsley, Yorkshire, England | |
| D: | Aft 1266 |
| Yorkshire, England | |
| Sir William de Ros Bef 1200-Abt 1265 |
| Sir William de Ros | |
| B: | Bef 1200 |
| Helmsley, Yorkshire, England | |
| D: | Abt 1265 |
| Kirkham, Yorkshire, England | |
|
| Piers FitzHerbert Abt 1163-Bef 1235 |
| Piers FitzHerbert | |
| B: | Abt 1163 |
| Breconshire, Wales | |
| D: | Bef 06 Jun 1235 |
