Isilia de Bourges was born circa 1072 in England to Hervey de Bourges (-1086) and Jenita Unknown and died 1121 England of unspecified causes. She married Guillaume de Peche (-c1100) .
Children
| Name | Birth | Death | Joined with |
| Hamon de Peche (-1178) | 1100 England | 29 September 1178 Hampshire, England | Alice Peverel (-1188) |
Siblings
| Name | Birth | Death | Joined with |
| Isilia de Bourges (-1121) | 1072 England | 1121 England | Guillaume de Peche (-c1100) |