John Argyropoulos was one of the leading Greek scholars that drove the undercurrent of Renaissance in 15th century Italy. He translated Greek philosophical and theological works into Latin, as well as produced rhetorical and theological works of his own. He was in Italy as attendee at the Council of Florence during 1439-1444, and returned to Italy subsequent to the Fall of Constantinople, teaching in Florence in 1456-1470 and in Rome in 1471-1487. Attached here are his various correspondence, most of which is with the Dukes of Florence and Milan.