This continues my previous post, based on the article by Sever J. Voicu, which is too interesting to be left in Italian.
The first direct quotation of Chrysostom in Latin appears around 414 A.D. Augustine tells us that Pelagius quotes Chrysostom by name (De natura et gratia 76 (64): Urba-Zycha 1913, p.291):
Ioannes … dicit peccatum non esse substantiam, sed actum malignum … Et quia non est naturale, ideo contra illud legem datam, et quod de arbitrii libertate descendit.
The quotation is not from any work known today but the thought and phrasing are Chrysostomian, and we may believe that it comes from an authentic work.
It is possible that Pelagius quoted Chrysostom from the Greek. However it seems that, despite his residence in the east, Pelagius was no master of Greek. This would make this evidence of a translation of Chrysostom into Latin by this date.