Italian sculptor of German origin, as indicated by his name. He is first mentioned in 1386 in Florence where he worked for the Cathedral until 1399. Between 1387-90 he carved fifteen statuettes for the portal niches of Florence Cathedral after designs by different painters - Lorenzo di Bicci, Agnolo Gaddi, Jacopo di Cione, Spinello Aretino, and perhaps others. He also worked in Milan in the Cathedral. In 1402 he was in Orvieto, where he worked on the baptismal font of the cathedral. His most famous work is the Madonna of the Rose in the niche of Arte dei Medici e Speziali in Orsanmichele in Florence. His style is characterized by a certain realism and an approach to the classical models, which previews the Renaissance. Niccolò di Piero Lamberti was his assistant. //