I know that "Frederick VI" is considered his forename, and royalty general have no surname. But IMSLP wouldn't accept that.
I looked at Frederick II and he seems to have had his name purely as a forename (or is it purely a surname?)
So I made "Frederick" his forename, and "VI" his surname. It worked as far as making an entry for him, but of course it's not correct as his surname begins with V."
I don't see a way of a non-administrator correcting this. So....help, please.