1146 - 1194 (48 years)
| Sir William de Roos of Ingmanthorpe Sir William de Ros | |
| B: | Abt 1244 |
| England | |
| D: | Bef 28 May 1310 |
| York, Yorkshire, England | |
| 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 |
| Sir William de Ros | |
| B: | Bef 1200 |
| Helmsley, Yorkshire, England | |
| D: | Abt 1265 |
| Kirkham, Yorkshire, England | |
| Lucy Fitzpiers | |
| B: | 1204 |
| Helmsley, Yorkshire, England | |
| D: | Aft 1266 |
| Yorkshire, England | |
| Robert de Ros | |
| B: | Abt 1223 |
| D: | 13 May 1285 |
| Sir Alexander de Ros | |
| D: | Abt 1306 |
| Robert de Ros, Lord of Hamlake Castle | |
| B: | Abt 1172 |
| Helmsley, Yorkshire, England | |
| D: | 1227 |
| Helmsley, Yorkshire, England | |
| Isabella MacWilliam | |
| B: | Abt 1165 |
| Scotland | |
| M: | 1191 |
| Haddington, East Lothian, Scotland | |
| D: | Abt 1240 |
| Scotland | |
|
| Roese Trussebut | |
| B: | 1146 |
| Hamlake, Yorkshire, England | |
| D: | 1194 |
| Helmsley, Yorkshire, England | |
| Everard de Ros | |
| B: | Aft 1145 |
| Yorkshire, England | |
| M: | Between 1170 and 1171 |
| England | |
| D: | Abt 1186 |
| Helmsley, Yorkshire, England | |
