From this school the art is believed to have spread in these early times over all Tuscany, although it must not be forgotten that there were miniature painters there as well as in the other parts of Italy, who, transferring their art from small to large works, like Franco of Bologna, betook themselves, and incited others to painting on walls and on panel. Whatever we may choose to believe, Siena, at this period, could boast her Guido, who painted from the year 1221, but not entirely in the manner of the Greeks, as we shall find under the Sienese school. Lucca possessed in 1235 one Bonaventura Berlingieri. A San Francesco painted by him still exists in the castle of Guiglia, not far from Modena, which is described as a work of great merit for that age.[41] There lived another artist about the year 1288, known by his production of a crucifixion which he left at San Cerbone, a short distance from the city with this inscription; "_Deodatus filius Orlandi de Luca me pinxit_, A. D. 1288." Margaritone of Arezzo was a disciple and imitator of the Greeks, and by all accounts he must have been born several years before Cimabue. He painted on canvas, and if we may credit Vasari, made the first discovery of a method of rendering his pictures more durable, and less liable to cracking. He extended canvas on the panel, laying it down with a strong glue, made of shreds of parchment, and covered the whole with a ground of gypsum, before he began to paint. He formed diadems and other ornaments of plaster, giving them relief from gilding and burnishing them. Some of his crucifixions remain in Arezzo, and one of them is in the church of the Holy Cross at Florence, near another by Cimabue; both are in the old manner, and not so different in point of merit, but that Margaritone, however rude, may be pronounced as well entitled as Cimabue to the name of painter.