Robert de Ros
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| Sir William de Ros 1192-1264 |
| Sir William de Ros | |
| B: | 1192 |
| Helmsley, Yorkshire, England | |
| D: | 1264 |
| Yorkshire, England | |
 | Lucy FitzPeter 1205-1266 |
| Lucy FitzPeter | |
| B: | 1205 |
| Breconshire, Wales | |
| D: | 1266 |
 | Baron of Helmsley Robert de Ros 1170-1226 |
| Baron of Helmsley Robert de Ros | |
| B: | 1170 |
| D: | 23 Dec 1226 |
| Isabella Mac William 1175-1226 |
| Isabella Mac William | |
| B: | 1175 |
| Haddington, East Lothian, Scotland | |
| D: | 23 Dec 1226 |
| London, England | |
| Edvard de Ros 1144-1183 |
| Edvard de Ros | |
| B: | 1144 |
| England | |
| D: | 1183 |
| Yorkshire, England | |
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