| Family |
DE ROS, Baron Robert IV, b. 1228, West Riding, Yorkshire, England , d. 20 Apr 1274, Kirkham, Northumberland, England (Age 46 years) |
| Children |
| | 1. DEROS, William Ii 3Rd Earl, b. 1250, Wark On Tweed, Northumberland, England , d. 9 May 1310, Kendal Castle, Westmoreland, England (Age 60 years) [natural] |
| | 2. DE ROS, Roger, b. 1251, d. 1288 (Age 37 years) [natural] |
| | 3. DE ROS, Joan, b. 1252, Helmsley Castle, Yorkshire, England , d. 13 Oct 1348, Mitford, Suffolk, England (Age 96 years) [natural] |
| | 4. DE ROS, Mary, b. 1253, Helmsley, Yorkshire, England , d. 23 May 1326, Bramber, Sussex, England (Age 73 years) [natural] |
| | 5. DE ROS, Isabel, b. 1256, Yorkshire, England , d. 1309, East Riding, Yorkshire, England (Age 53 years) [natural] |
| | 6. DE COLVILLE, Sir Robert 2nd Baron Colville, b. 1260, Bytham Castle, Lincolnshire, England , d. 6 Mar 1288, Bytham Castle, Lincolnshire, England (Age 28 years) [natural] |
| | 7. DEROS, Avelina, b. 1430, England , d. Exeter, Devon, England [natural] |
| | 8. DEROS, Margaret [natural] |
|