Italian painter active in Siena, Florence and Pisa. In 1384-87 he completed the St. Ranier frescoes begun by Andrea da Firenze in the Campo Santo at Pisa. Other frescoes by him are now lost except for some ruined fragments of Passion and Marian subjects in Florence. His Venetian origin is perhaps responsible for the lively color and play of light observed in the Pisan frescoes.