Ambrogio Lorenzetti 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 in the Palazzo Pubblico at Siena. His elder brother was the painter Pietro Lorenzetti. 1290 – June 9, 1348; died at about 58. Alive at the same time as Dante Alighieri, Marco Polo, William of Ockham, Edward I of England, and Ibn Taymiyyah. Wiki link