Pietro Lorenzetti

Pietro Lorenzetti (c. 1280 – 1348) was an Italian painter, active between c.1306 and 1345. Together with his younger brother Ambrogio, he introduced naturalism into Sienese art. In their artistry and experiments with three-dimensional and spatial arrangements, the brothers foreshadowed the art of the Renaissance. Perhaps Lorenzetti's most ambitious work is the Passion fresco cycle in the left transept of the Lower Church of San Francesco in Assisi. These seventeen well-preserved frescoes – the highpoint of his early career – show "the influence of Giotto's monumentality, the impulse of Pisano, thirteenth century Expressionism...and the teachings of Duccio.”