real name Donato di Betto Bardi. 1386–1466, Florentine sculptor, regarded as the greatest sculptor of the quattrocento, who was greatly influenced by classical sculpture and contemporary humanist theories. His marble relief of St George Killing the Dragon (1416–17) shows his innovative use of perspective. Other outstanding works are the classic bronze David, and the bronze equestrian monument to Gattamelatta, which became the model of subsequent equestrian sculpture