 Allegations from later Roman sources (Historia Augusta and Epitome de Caesaribus) that Philip had a very humble origin or even that his father was a leader of brigands are not accepted by modern historians.While the name of Philip's mother is unknown, he did have a brother, Gaius Julius Priscus, an equestrian and a member of the Praetorian Guard under Gordian III (238–244).In 234, Philip married Marcia Otacilia Severa, daughter of a Roman Governor.