Ambrosiaster

Ambrosiaster or Pseudo-Ambrose is the name given to the unknown author of a commentary on the epistles of Saint Paul, written some time between 366 and 384 AD. The name "Ambrosiaster" in Latin means "would-be Ambrose". Various conjectures have been made as to Ambrosiaster's true identity, and several other works have been attributed to the same author, with varying degrees of certainty.

Identity

Pseudo-Ambrose was the name given by Erasmus to refer to the author of a volume containing the first complete Latin commentary on the Pauline epistles.

Attempts to identify Ambrosiaster with known authors have continued, but with no success. Because Augustine cites Ambrosiaster's commentary on Romans 5:12 under the name of "Hilary", many critics have attempted to identify Ambroasiaster with one of the many writers named "Hilary" active in the period. In 1899, Germain Morin suggested that the writer was Isaac, a converted Jew and writer of a tract on the Trinity and Incarnation, who was exiled to Spain in 378–380 and then relapsed to Judaism. Morin afterwards abandoned this theory of the authorship in favour of Decimus Hilarianus Hilarius, proconsul of Africa in 377. Alternatively, Paolo Angelo Ballerini attempted to sustain the traditional attribution of the work to Ambrose, in his complete edition of that Father's work. This is extremely problematic, though, since it would require Ambrose to have written the book before he became a bishop, and then added to it in later years, incorporating later remarks of Hilary of Poitiers on Romans. No identifications, therefore, have acquired lasting popularity with scholars, and Ambrosiaster's identity remains a mystery.