FAUSTUS OF RIEZ (c. 408–c. 492), bishop of Riez in Provence, was born probably in Britain, and at an early age en tered the monastery of Lerins, where he became abbot in 433. He was appointed bishop of Riez about 46o, but his opposition to Arianism led Euric, king of the Visigoths, to banish him in 477. About this time he wrote his chief work, the Libri duo de Gratia Dei et humanae nzentis libero arbitrio, against Predestinarianism, a work marred by Semipelagianism and finally condemned by the Synod of Orange in 529. Faustus seems to have returned from exile on the death of Euric in 485.
His works are to be found in the series, Corpus Scrip. eccles. lat., vol. xxi., and in Migne's Patrol Lat., vol. xlviii. See Herzog, Realen zyklopadie.