The friendship between John Keats and Benjamin Robert Haydon is one chapter in the life of the poet which has never been satisfactorily written. A biography, like a novel, must needs have a villain; and in Haydon, Keats's biographers have one ready made. He was an egoist, a fanatic, and—worst of all—a failure; and surely, one is likely to think, whenever Haydon and Keats disagreed, Keats must have been right. The fact is that Keats and Haydon were intimate friends during the greater part of Keats's active creative life, and that each held the other, as an artist, in the highest regard. The purpose of the present study is to examine in some detail the course of this friendship and tentatively evaluate the importance of the influence of the painter on the poet.