Prosper of Aquitaine

c.390-c.463. A scholar whose background is unknown save that he had a classical education, was learned in theology, was married, and was part of a monastic community in Marseilles at the outbreak of the Semi-Pelagian controversy* (426), which he opposed. Together with a friend, Hilary, he wrote to Augustine* in Africa (428) concerning the opposition to his theology of grace and predestination, especially among the disciples of [[John Cassian]],* to which Augustine's reply was the De praedestinatione sanctorum and De dono perseverantiae. In 431 he went to Rome to gain [[Celestine I]]'s* support for Augustine's doctrines, then published several works in their defense, with attacks on [[Vincent of Lérins]]* (Pro Augustino responsiones) and Cassian (Contra collatorem), including the Capitula Caelestiana which went to the bishops of Gaul as part of a papal letter. While initially in agreement, he finally rejected Augustine's position (De vocatione omnium gentium), believing God willed to