In Italian, the 15th century, conceived as an historical and cultural epoch. Art his-torians speak of Quattrocento style as the art produced during the first two-thirds of the 15th century, from Brunelleschi, Donatello, and Masaccio down to the earliest works of Leonardo da Vinci, the old-est of the great masters of the High Renaissance style, whose earliest dated work was done in 1473.
Historical Dictionary of Renaissance. Charles G. Nauert. 2004.