| Birth |
1255 |
| Died |
16 Aug 1316 |
| Buried |
Kirkham, Yorkshire, England  |
| |
| Father |
Robert De Ros, , b. Abt 1223, Belvoir |
| Mother |
Isabel D'aubigny, b. Abt 1223 |
| Married |
5 Jun 1243 |
, Leicestershire, England |
| |
| Family 1 |
Maud De Vaux, b. 1270 |
| Married |
1287 |
| |
| Family 2 |
Maude (Matilde) De Vaux, b. Abt 1257 |
| Married |
Abt 1287 |
| Children |
| | 1. John De Ros, b. Abt 1287 |
| | 2. Margaret De Ros, b. Abt 1298 |
| | 3. Margaret De Ros, b. Abt 1305 |
| | 4. Joan De Ros, b. 1309 |
| | 5. Alice De Ros, b. Abt 1310 |
| | 6. Alexander Rosse, b. Abt 1377 |
| | 7. William III De Ros, b. Abt 1290, Helmsley In Holderness, York, England |
| | 8. Agnes De Ros |
|
| |
Abt 1377 - Yes, date unknown
William De Ros, b. 1255 d. 16 Aug 1316 (Age 61 years) 
Abt 1257 - Yes, date unknown