and then in the other, that there can be no doubt a fraternity existed between them. We even find Donatello, who came from Florence to make the bronze doors, sleeping in a feather bed supplied by the _camarlengo_ of the _Opera_ at Siena.[235] Donatello was more or less in Siena between 1457 and 1461. He was engaged to sculpture the altar of the Madonna of the Duomo there on October 17, 1457. His accounts are much mixed up with those of Urbano di Pietro of Cortona, of whom we have spoken. It seems Urbano bought the metal to cast a half figure of Judith, and one of St. John, both modelled by Donatello. The money, however, was advanced to Urbano by the banker Dalgano di Giacomo Bichi. The books of the _camarlengo_ of the _Opera_ have several entries for expenses of modelling wax, and metal for casting, etc., used by Donatello in the figures on the altar of the Madonna delle Grazie; his assistants and pupils on this occasion were Francesco di Andrea di Ambrogio, of Lombard origin, and Bartolommeo di Giovanni di Ser Vincenzo. FOOTNOTES: [210] All the Masters marked * were receiving pay at the Duomo of Siena in 1318. [211] All the Masters marked † gave their opinion, on oath, of the works at the Duomo of Siena in councils in 1333. [212] Merzario, _I Maestri Comacini_, Vol. I. chap. vii. p. 210, quoted from an ancient MS. cited by Cicognara. [213] Pope Alexander had a long reign from 1159 to 1181, but there were four antipopes to harass him during its duration. [214] Reproduced in Milanesi's _Documenti per l' Arte Senese_, vol. i. pp. 128, 129. [215] Milanesi, _Documenti per la Storia dell' Arte Senese_, p. 130. [216] These Four Holy Martyrs are the "Santi Quattro Incoronati," the patron saints of the guild. We find from the _Breve_ that at the feast of the dead, on November 2, all the Masters and officers of the guild had to meet in their chapel to hear mass. Each Master was to bring a wax taper not weighing less than half-a-pound, and was to make an offering for the maintenance of the chapel, etc., of whatever he could afford. The Rector (Grand Master) was obliged by oath to enforce the strict observance of the day, and to fine any Magister who, being in Siena, should absent himself from the meeting, fifteen soldi, besides the offering he ought to have made. They had another greater feast of the Four Martyrs in June, the grand _fête_ of the guild. [217] In Florence and Venice the _riveditori_ are called _probi viri_, sometimes they are _Buonuomini_. [218] Milanesi, _Op. cit._ pp. 153, 154. [219] Milanesi, _Op. cit._ vol. i. p. 157. [220] "De immunitate magistri Johannis quondam magistri Nichole.