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MARIUS MERCATOR.
THis Author remained a long time in obscurity. The ancient and modern▪ Composers of Bibliotheca's have spoken nothing of him. His Works have been but lately recovered. * 1.1 He began to write in S. Austin's Life-time, who assures us in his 193d. Letter, written in 418. That M. Mercator, to whom it is directed, had made a Treatise against the New Here∣ticks; that is to say, against the Pelagians. S. Austin speaks of him, as a Man of Worth and Learning. It is probable he was an Italian a 1.2, and he seems to have been but a meer Layman b 1.3.
This Man was one of the most zealous Adversaries of the Hereticks of his time, and especially of the Pelagians, whom he pursued vigorously, publishing Memoirs against them, and Collections of Pieces to discover their Errors, and bring them to Condemnation.
The first Work which he composed, was a Discourse against the Opinions of the Pelagians, in which he hath collected several Texts of Holy Scripture, as S. Austin tells us in his 193d. Letter. We have not this Work unless it be the Hypognosticon, which bears the name of S. Austin, as we have guessed in the first part of this Tome of our Bibliotheca, p. 256.
The Second is an Historical Commentary against Coelestius, which he first made in Greek to * 1.4 publish at Constantinople, and which he presented to the Emperor Theodosius, Anno 429 c 1.5 that he might inform the Eastern Christians of the Condemnation of Coelestius and his Follow∣ers. The Title of this Commentary discovers the time, occasion, and the effect of it. Thus it is expressed; A Copy of the Commentary, which Mercator published in Greek against Coele∣stius, and which he not only gave to the Church of Constantinople, and disposed to several Per∣sons of Piety, but also presented to the Emperor Theodosius in the Consulship of Florentius and Dionysius, and which he afterward translated out of the Greek into Latin; which Commentary having discovered the Errors of Coelestius, was the Cause that Julian, and his Companions who defended them, were banished from Constantinople as well as Coelestius, by the Emperor's Edict, and afterward condemned in the Council of Ephesus, by the Judgments of 275 Bishops.
This Commentary is an Abridgment of the History of the Condemnation of the Heresie of Pelagius. Mercator tells us therein, That Coelestius, a Scholar of Pelagius, being come from Rome, where he had been almost 20 years, went to Carthage, where he was accused by Pau∣linus a Deacon of S. Ambrose, of several Errors, contained in 6 Articles, which he transcribes; That the Bishops of Africk had condemned them in a Synod, and had enjoyned Coelestius to Anathematize them; That he thought it convenient to appeal to the Bishop of Rome, but neg∣lecting to prosecute the Appeal, he came to Ephesus, where he procured himself to be ordain'd Priest; That from thence he passed to Constantinople in the time of Atticus, but being known, he was driven from thence by that Bishop, who wrote circular Letters against him; That Coelestius seeing himself thus thrust out, went to Pope Zosimus, and pretending to condemn the Articles which were charged upon him, he obtained Letters in his favour directed to the Bishops of Africk. But these Bishops having given Zosimus information in writing of all that had passed, Coelestius, who would not perform what he had promised, durst not appear before Zosimus again, and so withdrew himself from Rome. Whereupon Zosimus condemned him by a long Writing, which contained the Articles of Coelestius, and all the Story of his Condem∣nation. Mercator next speaks of the Errors of Pelagius, Master of Coelestius, which he relates in the very words of Pelagius taken out of his Commentary upon S. Paul's Epistles. He adds, That these Errors having been condemned by Zosimus's Letter sent into all parts, and confirm∣ed by the Consent and Subscriptions of the Bishops of other Countries. Julian and his Asso∣ciates who would not sign them were banished out of Italy by the Imperial Law, and deposed by the decrees of the Synods, and that some of them having acknowledged their Error were received and confirmed by the Holy See.