Every student of the literature of the Middle Ages is aware that Eichard I was a highly popular figure in medieval England, and that about the historical facts of his career there grew up with rapidity and luxuriance a considerable growth of romantic legend. As his fame challenged the pre-eminence of Arthur among British heroes, so his exploits, like Arthur's, multiplied and grew more marvelous in the imagination of the people, though for obvious reasons the process never went so far. To Richard's prestige among his own people we have abundant testimony in the seven manuscripts of the Middle English romance of Richard Cœur de Lion extant and in the three printed editions of the sixteenth century. As Ellis pointed out, as early as 1805, in introducing his synopsis of the romance, it is a curious texture of narrative mainly historical concerning the Third Crusade, interwoven liberally with bits of this legendary material. It will be profitable, before dealing with illustrations of certain episodes occurring in the romance, to devote some attention to its development and structure. In a review of Dr. Karl Brunner's critical edition of Richard Cœur de Lion, to be published elsewhere, I hope to deal fully with the subject, and merely summarize here the results of my investigations. I owe much to Dr. Brunner's discussion, but more to that of Gaston Paris, whose conclusions in general I adopt.