Guidoriccio da Fogliano at the siege of Montemassi (also called Guidoriccio from Fogliano ) is a large fresco (968x340 cm) placed in the Hall of the Globe of Siena Public Palace . It is traditionally attributed to Simone Martini , who would have painted in 1330 , but a long controversy that began in 1977 and the recent discovery of preparatory drawings would think of a remake of the fifteenth century.