Italian painter, active in Siena, sometimes confused with Guido da Siena, another painter in Siena, active in the second half of the 13th century. Guido di Graziano has obviously followed Cimabue whose style differs completely from the more archaic style of Duccio. One can see in his paintings the delicate quality of colour, rich tones and transparencies, as well as at the fluidity of line, free of the rigid constraints of the preceding manner. The painter is distinguished by his undeniable talent to create simple and effective settings. He is credited with two lost frescoes in the Palazzo Pubblico, Siena. His only documented work is a tablet biccherna with Don Guido di San Galgano (1280-85) from which a small group of panels was rebuilt in the 1990s, containing the Dossale di San Pietro and the altarpiece with St Francis and stories of his life (both in the Pinacoteca Nazionale, Siena). //