Peter was conceived while Benny was possessed by the alien sorceress Avril Fenman, who seduced Benny's Killoran associate, Adrian Wall. (PROSE: The Squire's Crystal) Peter was born on the planet Deirbhile by Caesarean section because he was already too large to be delivered normally. Bernice was imprisoned there by the Fifth Axis. (PROSE: The Glass Prison) She gave him the middle name of Guy to honour Guy de Carnac, whom Benny once loved. (PROSE: Sanctuary) Peter's early years were traumatic, marked by wartime deprivations and enforced separation from his mother. (PROSE: Life During Wartime)