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Ermentrude d'Lisle was born circa 1228 in England to Robert d'Lisle (-1262) and Alice FitzGerald (-1284) and died 1268 England of unspecified causes. She married Walter de Ledet (c1230-c1256) .
Children
| Name | Birth | Death | Joined with |
| Alicia de Ledet (-c1316) | 1251 England | 1316 England | William le Latimer, 1st Baron Latimer (-1305) |
Siblings
| Name | Birth | Death | Joined with |
| Ermentrude d'Lisle (-1268) | 1228 England | 1268 England | Walter de Ledet (c1230-c1256) |