Skip to content
Deacon Keith Fournier Hi readers, it seems you use Catholic Online a lot; that's great! It's a little awkward to ask, but we need your help. If you have already donated, we sincerely thank you. We're not salespeople, but we depend on donations averaging $14.76 and fewer than 1% of readers give. If you donate just $5.00, the price of your coffee, Catholic Online School could keep thriving. Thank you. Help Now >

Marius Mercator

Free World Class Education
FREE Catholic Classes

Ecclesiastical writer, born probably in Northern Africa about 390; died shortly after 451. In 417 or 418 he was in Rome where he wrote two anti-Pelagian treatises, which he submitted to St. Augustine (Ep. ad. M.M., no. 193). From 429 till about 448 he was in Constantinople. His works, mostly translations and compilations of excerpts from heretical as well as orthodox Greek theological writers, were edited by Garnier (Paris, 1673), reprinted in Migne (P.L., XLVIII, Paris, 1846). They were also edited by Baluze (Paris, 1684), reprinted with corrections in Galland, "Bibliotheca veterum Patrum", VIII (Venice, 1772), 613-738. His treatises "Commonitorium super nomine Cælestii", and "Commonitorium adversus hæresim Pelagii et Cælestii vel etiam scripta Juliani" are against the Pelagians. The former (in Migne, loc. cit., 63-108) effected the expulsion of Julian of Eclanum and Cælestius from Constantinople and their condemnation at Ephesus in 431. The latter is in Migne, loc. cit., 109-172. Against the Nestorians he wrote "Epistola de discrimine inter hæresim Nestorii et dogmata Pauli Samosateni, Ebionis, Photini atque Marcelli" ( Migne, loc. cit., 773) and "Nestorii blasphemiarum capitula XII" ( Migne, loc. cit., 907-932). Among his translations are extracts from Cyril of Alexandria, Nestorius, Theodore of Mopsuestia, Theodoret, Pelagius, and others.

Face Mask with Cross BOGO 50% OFF

Never Miss any Updates!

Stay up to date with the latest news, information, and special offers.


Shop Catholic - Buy One Get One 50% OFF

Mix and match any of these bestselling products and enjoy 50% off the second item!

Catholic Online Logo

Copyright 2020 Catholic Online. All materials contained on this site, whether written, audible or visual are the exclusive property of Catholic Online and are protected under U.S. and International copyright laws, © Copyright 2020 Catholic Online. Any unauthorized use, without prior written consent of Catholic Online is strictly forbidden and prohibited.

Catholic Online is a Project of Your Catholic Voice Foundation, a Not-for-Profit Corporation. Your Catholic Voice Foundation has been granted a recognition of tax exemption under Section 501(c)(3) of the Internal Revenue Code. Federal Tax Identification Number: 81-0596847. Your gift is tax-deductible as allowed by law.