c. 1450-1523. Italian painter, active in central Italy. About 1483 he was called to the Vatican to complete frescoes on the walls of the Sistine Chapel. He produced large frescoes in Orvieto Cathedral, where he devoted a number of scenes to The Last Judgment 1499-1504. The style is sculptural and dramatic, reflecting late 15th-century Florentine trends, but Signorelli's work is more imaginative. He settled in Cortona and ran a workshop producing altarpieces.