It seems that there is a 32 volume (plus a volume of indexes) French translation from the 1860s of all the works of St Augustine. Four translators are listed on the title page – Peronne, Vincent, Ecalle and Charpentier. It’s published in Paris by Louis Vives. How good the translation is, I do not know. But it is something to have it available, and I certainly had never heard of it.
Curiously there seems to be another series of similar translations, from around the same time, in 17 volumes translated under the direction of a certain M. Raulx, and printed at Bar-le-Duc by L. Guerin. Volume 1 of that is here. I do not know what the connection is, but I would expect that there is one!
In these days of Google Translate, such things are valuable.