... This name was used by the Irish, or more properly Scottish, Morgan, as a translation of his own name, and thus became tainted with the connection of the Pelagian heresy. (History of Christian Names, Yonge, 1884)

... Augustinus, de peccato originali, § 13, calls Cœlestius apertior, Pelagius occultior.  Whether the account given by Prædestinatus is correct, that Cœlestius had also written a work against the doctrine of the traduction of souls, before Pelagius appeared openly as a polemic, is questionable. (General History of the Christian Religion and Church, Neander-Torrey, v.4, 1849)