Well, Edgar Allan Poe is more than gothic horror writer. Have you write Poe's novel "The Narrative of Arthur Gordon Pym of Nantucket" ? There is germ of surrealism. I think you know how much Poe influenced Charles Baudelaire and Baudelaire is of the group of the poets like Rimbaud, which are the basis of surrealism.

Interesting, from you I understand for the influence of Aleister Crowley on surrealism. I have to check for more information about that. And for me it is positive think that spiritualism and occultism are heavily rooted in surrealism. But this is a subjective preference. You know that during this period piritualism and occultism have influenced many other movement in art. Let me just mention authors outside the avant-garde like August Strindberg or Gustav Meyrink.

Ah, for J.R.R. Tolkien my opinion is the same as yours for the surrealism. :D I am modest fan of fantasy but only in the visual form :)