It’s a real name, and I have to say, it’s pretty badass in its origin:
“This interesting and unusual name, with variant spelling “Hunwin”, derives from the Olde English pre 7th Century personal name “Hunwine”, a compound of the elements “hun” bearcub, plus “wine”, friend, hence “bear-friend”. Later in the Olde English or early Middle English period, this name, due to the loss of the “h”, came to be confused with the word “unwine” meaning “unfriend” or “enemy”
Bear-Friend is kind of awesome, you have to admit. And even the later version, well…”Apache” means enemy in the language of their neighbors, so there’s a certain cachet in adopting it right off the bat.