What I find fascinating is that Tolkien gave to Luthien this identity. Did he read Bram Stoker's
Dracula? (
http://en.wikipedia.org/wiki/Dracula_%28novel%29 Did he know of the relationship between Lucy and the vampire and all the subversive sexuality of the Victorian genre?
What went through his mind as he gave these characters of the vampire and the werewolf to Luthien and Beren? And then had Luthien and Beren chistled onto the gravestones of himself and Edith?