Donato di Niccolò di Betto Bardi, known mononymously as Donatello, was an Italian sculptor of the Renaissance period. Born in Florence, he studied classical sculpture and used his knowledge to develop an Early Renaissance style of sculpture. He spent time in other cities, where he worked on commissions and taught others; his periods in Rome, Padua, and Siena introduced to other parts of Italy the techniques he had developed in the course of a long and productive career. His David was the first freestanding nude male sculpture since antiquity; like much of his work, it was commissioned by the Medici family.