Madonna Lucrezia Borgia was living in the Convent of San Sisto, separated from her husband, Don Giovanni Sforza the Tyrant of Pesaro; and seeking a decree of nullity of marriage, alleging a canonical impediment. This young man was cousin to the Duke of Milan, very handsome in person, and intelligent. He already had been married to Madonna Maddalena Gonzaga, who in 1490 had died _di cattivo parto_ (Gregorovius). In 1493, being then in his twenty-sixth year, he had married Madonna Lucrezia, from whose Father he held his Tyranny of Pesaro by way of fief, consolidating the alliance of Sforza and Borgia. He had most of the advantages of life, illustrious birth, rank, youth, health, a splendid position, intimate relationship with his feudal lord, and a wife acknowledged by all contemporaries as the most beautiful woman of her time: and now, after little more than three years, he was to be held up to the derision of all by the annulment of his marriage on the score of αδῆνᾶμία. Nothing, at any time is more certain to enrage a man than this; and, in the Fifteenth Century, the Century of the Discovery of Man, when ἀvδpeίa was prized and worshipped, a charge which made him look ridiculous in the estimation of his species, which struck at the very root of his manlihood, was sure to be furiously resented. When his wife left him to enter her petition, Don Giovanni Sforza sped to Milan invoking the support of his kin, the Vicechancellor-Cardinal Ascanio Maria Sforza-Visconti and the Duke Ludovico Maria (detto Il Moro). On news reaching them to the effect that evidence had been given before the legal tribunal in Rome, which proved the marriage to lack consummation and Madonna Lucrezia to be παρθένος ἀδμήτη, he violently protested, and with unrestrained rancour. Don Beltrando Costabili, the Orator of Ferrara, writing from Milan to his government, asserted that Don Giovanni said to Duke Ludovico Maria, “Anzi haverla conosciuta infinite volte, ma chel Papa non gliela tolta per altro se non per usare con lei.” It is most improbable that a reigning sovereign would admit a foreign ambassador to a discussion of his family affairs; and unless Costabili actually heard those words, they can only be accepted as a piece of gossip reported, not as legal evidence. Duke Ludovico Maria ingenuously proposed to Don Giovanni an ordeal which, in that naive age, was usual in similar cases, of submitting formally and publicly to the judgment of a jury of men of bonafides and the papal legate: and, on his refusal, his own relations, the Duke and the thin-faced clear-witted Vicechancellor-Cardinal, obtained from him a written confession that Madonna Lucrezia was justified in her petition, and advised him to let the law take its course. The case of a man temporarily άδύνατος at the age of Don Giovanni physiologically is no uncommon one. Much has been made of the circumstances under which his first wife died, and of the