Word Origin & History
Pelagian
1532, from M.L. Pelagianus, from Pelagius, Latinized form of the name of 4c. British monk who denied the doctrine of original sin. Combated by Augustine, condemned by Pope Zosimus, 418 C.E. His name in Welsh was Morgan, which is based on the root word for "sea" (cf. Gk. pelagos "sea").