The Gubbio fabrique was in full work previous to 1518; and the brilliantly lustred dish, which we engrave, now at South Kensington is before that date. That some of these early _bacili_ so well known and apparently the work of one artist were made at Pesaro, whence the secret and probably the artist passed to Gubbio, is far from improbable. The reason for this emigration is not known, but it may be surmised that the large quantity of broom and other brush-wood, necessary for the reducing process of the reverberatory furnace in which this lustre was produced, might have been more abundantly supplied by the hills of Gubbio than in the vicinity of the larger city on the coast. That the process of producing these metallic effects was costly, we gather from Piccolpasso’s statement that sometimes not more than six pieces out of a hundred succeeded in the firing. The fame of the Gubbio wares is associated almost entirely with one name, that of Giorgio Andreoli. We learn from the marchese Brancaleoni that this artist was the son of Pietro, of a “Castello” called “Judeo,” in the diocese of Pavia; and that, accompanied by his brother Salimbene, he went to Gubbio in the second half of the 15th century. He appears to have left and again returned thither in 1492, accompanied by his younger brother Giovanni. They were enrolled as citizens on the 23rd May 1498, on pain of forfeiting 500 ducats if they left the city in which they engaged to continue practising their ceramic art. Patronised by the dukes of Urbino, Giorgio was made “castellano” of Gubbio. Passeri states that the family was noble in Pavia. It is not known why or when he was created a “Maestro,” a title prized even more than nobility, but it is to be presumed that it took place at the time of his enrolment as a citizen; his name with the title “Maestro” first appearing on a document dated that same year, 1498. Piccolpasso states that Maiolica painters were considered noble by profession. The family of Andreoli and the “Casa” still exist in Gubbio, and it was asserted by his descendant Girolamo Andreoli, who died some 40 years since, that political motives induced their emigration from Pavia.