I know an "Ace" . . . short for "Asa," an Armenian first name.
I don't know if he's Armenian, though:
I always think of "that" Ace when I hear of an Ace. Maybe that's why I'm not crazy about the name. 'Course, I also think of Peter Criss when I hear the name Crissy. Oddly enough, I'm not a huge KISS fan, either.