The Man in the Iron Mask-
Essay about the legend/history behind Alexander Dumas' novel. According to Wikipedia: "Andrew Lang (March 31, 1844, Selkirk - July 20, 1912, Banchory, Kincardineshire) was a prolific Scots man of letters. He was a poet, novelist, and literary critic, and contributor to anthropology. He now is best known as the collector of folk and fairy tales.
Saint-Germain the Deathless-
Among the best brief masterpieces of fiction are Lytton's The Haunters and the Haunted, and Thackeray's Notch on the Axe in Roundabout Papers.* Both deal with a mysterious being who passes through the ages, rich, powerful, always behind the scenes, coming no man knows whence, and dying, or pretending to die, obscurely— you never find authentic evidence of his disease. In other later times, at other courts, such an one reappears and runs the same course of luxury, marvel, and hidden potency.