William de Trussell was born in England to Osbert de Trussell (-aft1165) and died after 1178 England of unspecified causes. He married Agnes de Locksley (-saft1178) .
Children
| Name | Birth | Death | Joined with |
| Richard de Trussell (-aft1268) | England | 1268 England | Unknown Mainsford (-c1268) |
Siblings
| Name | Birth | Death | Joined with |
| William de Trussell (-aft1178) | England | 1178 England | Agnes de Locksley (-saft1178) |