 He worked with stone, bronze, wood, clay, stucco and wax, and had several assistants, with four perhaps being a typical number.Though his best-known works were mostly 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.Donatello was the son of Niccolò di Betto Bardi, who was a member of the Florentine Arte della Lana, and was born in Florence, probably in the year 1386.