Italian sculptor. He belonged to a family of well-known artisans; his grandfather Agnolo di Lippo di Polo had worked as an assistant on the stained glass for the cupolaGLOSSARYIn architecture, a small dome, usually one set on a much larger dome or on a roof; a semi-circular vault. of Florence CathedralGLOSSARYThe principal church of a province or diocese, where the throne of the bishop is placed. For reasons lost to time and tradition, a cathedral always faces west - toward the setting sun. The altar is placed at the east end. The main body, or nave, of the cathedral is usually divided into one main and two side aisles. These lead up to the north and south transepts, or arms of the cross, the shape in which a cathedral is usually formed. and took the name de' Vetri, sometimes also used by his descendants. Agnolo's father, Polo di Agnolo, made masks and had his workshop on the Ponte Vecchio, Florence, and his brother Domenico de' Vetri engraved precious stones and medalsGLOSSARYThe medal came to artistic maturity within a remarkably short time of its introduction in 15th century Italy. This was partly because ancient Roman coins, which were beginning to be reverently collected, suggested (on a smaller scale) its form: profile portrait bust on the obverse, a different design on the reverse, an inscription running round the rim. Like the finest Imperial coins, the medal's purpose was commemorative. Without monetary value, and of non-precious metal (bronze or lead), it was a way of circulating a likeness to a chosen few; it anticipated the use of miniatures and was indeed frequently worn round the neck. And while the reverse could record a historical event or make a propaganda point related to its subject's career, more commonly it bore a design that purported to convey the 'essence', as it were, of the person portrayed on the other side. Given the admiration for the men and artefacts of ancient Rome, the stress on individual character, the desire for fame and the penchant for summing up temperament in symbols and images, it is easy to understand how quickly the fashion for commissioning medals spread. Its pioneer executant was Pisanello. The precedents before he began to cast medals in 1438-39 had been few and excessively coin-like. Within 10 years he had established the form the medal was to retain until the influence was registered of the reverseless, hollow-cast and wafer-thin medals of the 1560s and 70s made by Bombarda (Andrea Cambi). Pisanello's approach was first echoed by the Veronese Matteo de' Pasti (d. 1467-688). It was, perhaps oddly, not until the works from 1485 of Niccolò Fiorentino (Niccolò di Forzore Spinelli, 1430-1514) that Florence produced a medallist of the highest calibre. Other specialists in the medium included Sperandio (Sperandio Savelli, c. 1425-1504), L'Antico (Pier Jacopo Alari Bonacolsi, c. 1460-1528), Caradosso (Cristoforo Caradosso Foppa, 1452-1526/27). The work of these men, and of the many, often anonymous, who reflected them, is still coveted because it avoided the two medallistic errors: making a medal look like either an enlarged piece of money or a small sculptured plaque.. Vasari said that Agnolo was a pupil of Verrocchio, adding that 'he worked very well in clay and has filled the city with works from his hands'. Given the artist's birth date and that Verrocchio left Florence forever in 1483, Agnolo's apprenticeship would have been very brief; it is probable that he stayed on in the workshop when it was directed by Lorenzo di Credi.