MaleRobert IV, 1ST Baron DE Ros, OF BELVOIR,MP |
| Birth | Abt 1233 | Helmsley Castle North Riding,Yorkshire,England |
| Death | 17 May 1285 | Belvior Castle,Belvoir,Leicestershire,England |
| Burial | ||
| Marriage | Abt 1251 | <, Hamlake Castle, Yorkshire, England> |
| Other Spouse | Isabel de Albini, Heiress of Belvoir | F847 | |
| Marriage | 1243/1244 | |
| Father | William 1 De Ros, Baron Hamlake MP,LORD HELMSLEY,SIR | F1406 Group Sheet | |
| Mother | Lucia [Joan] Fitzpiers, Baroness of Ingmanthorpe | F1406 Group Sheet | |