He [William Pecche] married, 2ndly, Isilia, probably daughter and heir of Hervey de Bourges, who survived him (h). The date of his death is not known. [Complete Peerage X:331, (transcribed by Dave Utzinger)]
(h) Between 1121 and 1148 Hamon Pecche confirmed to St. Edmund's Abbey the gifts of his grandmother Jenita and his mother Isilia, the latter witnessing his charter.