Who is John Keats from the nonfiction book, How to Read and Why?

John Keats is an English poet who lived from 1795 to 1821. He is the author of "La Belle Dame Sans Merci," in which a knight-errant is fascinated destructively with a faery woman who threatens to destroy him. Bloom describes Keats' poem as one of the negative triumphs of literature, insofar as its use of language is so haunting and beautiful that the eventual death of the knight is redeemed my the beauty of his poem.