why is remus lupin named that in harry potter?”
One way to explain this is that he hadn’t been named yet at the time he was bitten by Fenrir Greyback; according to him, he was a “very small boy” at the time. In some traditions, children are not given proper names until several years after they are born. However, a better assumption is that it is the custom for all those bitten to undergo a name change. As example of this, we have Fenrir Greyback himself; In Norse mythology, Fenrir or Fenrisulfr is a monstrous wolf, the son of Loki and the giantess Angrboða. Fenrir is bound by the gods, but is ultimately destined to grow too large for his bonds and devour Odin during the course of Ragnarök. At that time he will have grown so large that his upper jaw touches the sky while his lower touches the earth when he gapes. He will be slain by Odin’s son, Viðarr, who will either stab him in the heart or rip his jaws asunder according to different accounts. Interestingly, Fenrir Greyback is, according to Lupin himself, “the most savage werewolf
