Pelagius

Pelagius (/pəˈleɪdʒiəs/ pə-LAY-jee-əs; fl. c. 354–418) was a Christian theologian known as an ascetic monk and promoting a system of doctrines (termed Pelagianism by the Catholic Church) which emphasized human choice in salvation and denied original sin. Pelagius was accused of heresy at the Synod of Diospolis in 415 and his doctrines were harshly criticized by Augustine of Hippo, especially the Pelagian views about mankind's good nature and individual responsibility for choosing asceticism. Pelagius especially stressed the freedom of human will.^[3] Very little is known about the personal life and career of Pelagius, although he was thought to be of British-Celtic or possibly Romano-British origin and fluent in Latin before arriving in Rome and later North Africa.

Early British monk and theologian (with knowledge in Greek, unlike Augustine). Notice below how he is in agreement with all the early church fathers about man’s free will and that we have not inherited Adam’s sin. 

Pelagius wrote “On Nature” and “Defense Of The Freedom Of The Will”, and in these he suggests that Augustine has been affected by Manicheanism (Augustine was a former gnostic) by mixing Christianity with pagan fatalism. Manicheanism teaches that the spirit is God-created, while the flesh is corrupt since it had not been created directly by God. Augustine is the great heretic and has brought in many heresies into church, and Pelagius continues to be wrongly attacked by Christians, despite the fact that he was both Biblical and taught the same things as all the church fathers before him.