Saint Prosper of Aquitaine (c. 390 – c. 455), a Christian writer and disciple of Saint Augustine of Hippo, was the first continuator of Jerome's Universal Chronicle. Prosper was a native of Aquitaine,[3] and seems to have been educated at Marseilles. By 429 he was corresponding with Augustine. His chief work was his De gratia Dei et libero arbitrio (432), written against John Cassian's Collatio.