(b Florence, ?c.1380; d Florence, 12 Feb. 1421).
Florentine sculptor, one of the major figures of the transition from Gothic to Renaissance. Much of his work was designed for one or other of two architectural settings in Florence, the cathedral and the church of Orsanmichele, which together formed the chief source of demand for sculpture in the city during the first quarter of the 15th century, and he often worked alongside Donatello. His work has a Gothic elegance, but also shows the influence of the antique: his masterpiece, the group of the Quattro Santi Coronati (Four Crowned Saints) at Orsanmichele, for example, features grave and dignified figures modelled on Roman senator statues. Because this and other major works are of controversial dating, however, it is uncertain whether he was in advance of Donatello in his use of classical exemplars.