(c. 1392-1450) Sienese painter. His work remained true to the International Gothic style of the 14th-century Sienese school, while reflecting contemporary discoveries in spatial representation by Florentine artists. His major work, a masterpiece of devotional art, was the altarpiece for San Francesco in Sansepolcro 1437–44 (Villa i Tatti, Florence/National Gallery, London/Louvre, Paris).