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active by 1427; died 1450

Known as Sassetta since the 18th century, Stefano di Giovanni was the most important artist in 15th century Siena, where he probably trained with Benedetto di Bindo and where he was inscribed with the guild of painters before 1428. His first documented work was an altarpiece for the Arte della Lana (guild of wool merchants) in 1423-6, while his masterpiece was the double-sided altarpiece for San Francesco, Borgo San Sepolcro 1437-1444.