Duccio di Buoninsegna (1255-1319) was an Italian painter, a precursor of the Renaissance style, who brought to perfection the art of medieval Italy in the Byzantine tradition. Duccio was the founder of the Sienese school of painting. Duccio's most famous and only signed work is the Maestà (1308-1311), a huge altarpiece painted on both sides, made for the cathedral of Siena; now most of it is displayed in the cathedral's museum.