Robert de Banastre was born circa 1241 in England to Robert de Banastre (-c1242) and Clémence de Orreby (-1258) and died circa 1290 England of unspecified causes. He married Alice Woodcock (-aft1289) .
Children
| Name | Birth | Death | Joined with |
| Clémence de Banastre (-1298) | 1260 England | 1298 England | William de Lea (-1302) |
Siblings
| Name | Birth | Death | Joined with |
| Robert de Banastre (-c1290) | 1241 England | 1290 England | Alice Woodcock (-aft1289) |