CAJETAN, or CAJETANUS, Tommaso de Vio, Italian cardinal: b. Gaeta, 25 July 1470; d. Rome, 9 Aug. 1534. He en tered the order of Dominican friars, graduated as a doctor and was elected general of his order in 1508. When Pope Julius II was sum moned to appear before the council of cardinals assembled at Pisa and afterward at Milan, in the interest of King Louis XII of France, Ca jetan undertook his defense, asserting that to the Pope alone belonged the power of con vening a council. He was appointed cardinal in 1517 by X, and sent as a legate in Ger many to bring the Emperor Maximilian and the King of Denmark mto the league formed against the Turks. His efforts to make Luther recant his doctrines proved in vain. In 1519 he was present, as Roman legate, at the assembly of the electors of the empire, and sided with the partisans of Don Carlos of Spain, who was elected emperor under the name of Charles V. Then he returned to Rome, but was soon or dered by Adrian VI to Hungary, which was invaded by the Turks. ' In 1524 he was recalled
to Rome by Clement VII. On the capture of Rome in 1527, being taken prisoner by the im perial troops, under the command of the Con stable of Bourbon, he had to pay 5,000 crowns as a ransom for his liberty. lie made a trans lation of the Old Testament, with a commen tary, and wrote a treatise on the authority of the Pope, which was answered by the faculty of the University of Paris. He also wrote com mentaries on parts of Aristotle's writings and on the 'Surnara> of Aquinas. The latter is reprinted in the definitive edition of the great Aquinas issued under the patronage of Leo XIII (Rome 1882). A collection of his work to which his life is prefixed appeared at Lyons in 1639 (5 vols.). Consult Schilbach, 'De Vita ac Scriptis de Vio Cajetani' (1881).