Unknown Mainsford was born on an unknown date to Piers Mainsford and died circa 1268 of unspecified causes. She married Richard de Trussell (-aft1268) .
Children
| Name | Birth | Death | Joined with |
| William de Trussell (c1226-1277) | 1245 England | Rose Pantulf (c1228-1294) | |
Siblings