I come to you with the game Castlevania Symphony Of The Night on PSX which has been fully translated into French.
The hack comes from Gemini and the base of the translation was done on the Italian translation.
The patch must be applied to the original Japanese version of the game which is:
Akumajou Dracula X - Gekka no Yasoukyoku (J) (v1.2).bin
SLPM-86023 (545.440.560 Octets).
The fix must be applied using PPF-O-Matic 3.0 which can be found here :https://www.romhacking.net/utilities/356/