Donatello

Donato di Niccolò di Betto Bardi, better known as Donatello, was an Italian sculptor of the Renaissance. Born in Florence, he studied classical sculpture and used this to develop a complete Renaissance style in sculpture, whose periods in Rome, Padua, and Siena introduced to other parts of Italy a long and productive career. Financed by Cosimo de' Medici, Donatello's David, was the first freestanding nude male sculpture since antiquity.
He worked with stone, bronze, wood, clay, stucco, and wax, and had several assistants, with four perhaps being a typical number. Although his best-known works mostly were statues in the round, he developed a new, very shallow, type of bas-relief for small works, and a good deal of his output was larger architectural reliefs.