Ambrogio Lorenzetti (c. 1290 – 1348),

• Was an Italian painter of the Sienese school.
• He was active from approximately 1317 to 1348.
• He painted The Allegory of Good and Bad Government in the Sala dei Nove (Salon of Nine or Council Room) in Siena's Palazzo Pubblico.
• His elder brother was the painter Pietro Lorenzetti.
• His work, although more naturalistic, shows the influence of Simone Martini.
• The earliest dated work of the Sienese painter is a Madonna and Child (1319, Museo Diocesano, San Casciano).
• His presence was documented in Florence up until 1321.
• He would return there after spending a number of years in Siena.
• Like his brother, he is believed to have died of bubonic plague in 1348.
• Giorgio Vasari includes a biography of Lorenzetti in his Lives.
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