Ah, it seems to have corrected itself x.x so it must have been some sort of weird cache thing; the name returned to normal after I left and came...
Yeah, I saved the party with the renamed character as far as I know. I will doublecheck though >.<
Weirdly enough, I noticed that I named one of my party members "Beatrice", but when I removed them from the party and the game tossed them to one...
Separate names with a comma.