Oh well, I always seem to show up on this chat page after everyone has gone for another week.
Re this week's topic, I've got English & German, but my high school French is pretty rusty. Taught myself enough Latin to deal with older records. Someday I'll probably need more Hungarian, Romanian and Polish to deal with archives and secular documents.
The biggest issue I've found is that handwriting is harder to decipher if you don't know the language - letters might be formed differently than you are used to, markings may be random spots or intentional diacritics, and of course, word spelling v…