Legend of Sir Lancelot du Lac
(Reklamlänk)
First published in 1901. According to Wikipedia: "Jessie Laidlay Weston (1850–1928) was an independent scholar and folklorist, working mainly on mediaeval Arthurian texts. Her best-known work is From Ritual to Romance (1920). In it she brought to bear an analysis harking back to James George Frazer