Ah, I thought there was some trouble with Sherlock Holmes and Peter Pan being used as characters because of their British origin -- that special permissions needed to be gotten -- but it's been several years since I did my (only very) cursory research.

I'm actually thinking of borrowing a character to play with, rather than quoting or borrowing the storyline (which is borrowed from the myth it takes its title from anyway). Are there additional complications there? Or should I still be fine?