"The Renaissance of the fifteenth century was in many things great, rather by what it designed or aspired to do, than by what it actually achieved."--_Walter Pater._ _Non già Salvestro ma Salvator mundi_, "thou that with noble wisdom hast saved thy country." Thus in a sonnet does Franco Sacchetti hail Salvestro dei Medici, the originator of the greatness of his house. In 1378, while the hatred between the Parte Guelfa and the adherents of the Otto della Guerra--the rivalry between the Palace of the Party and the Palace of the Signory--was at its height, the Captains of the Party conspired to seize upon the Palace of the Priors and take possession of the State. Their plans were frustrated by Salvestro dei Medici, a rich merchant and head of his ambitious and rising family, who was then Gonfaloniere of Justice. He proposed to restore the Ordinances against the magnates, and, when this petition was rejected by the Signoria and the Colleges,[16] he appealed to the Council of the People. The result was a riot, followed by a long series of tumults throughout the city; the _Arti Minori_ came to the front in arms; and, finally, the bloody revolution known as the Tumult of the Ciompi burst over Florence. These Ciompi, the lowest class of artizans and all those who were not represented in the Arts, headed by those who were subject to the great Arte della Lana, had been much favoured by the Duke of Athens, and had been given consuls and a standard with an angel painted upon it. On the fall of the Duke, these Ciompi, or _popolo minuto_, had lost these privileges, and were probably much oppressed by the consuls of the Arte della Lana. Secretly instigated by Salvestro--who thus initiated the Medicean policy of undermining the Republic by means of the populace--they rose _en masse_ on July 20th, captured the Palace of the Podestà, burnt the houses of their enemies and the Bottega of the Arte della Lana, seized the standard of the people, and, with it and the banners of the Guilds displayed, came into the Piazza to demand a share in the government. On July 22nd they burst into the Palace of the Priors, headed by a wool-comber, Michele di Lando, carrying in his hands the great Gonfalon; him they acclaimed Gonfaloniere and lord of the city. [16] The "Colleges" were the twelve Buonuomini and the sixteen Gonfaloniers of the Companies. Measures proposed by the Signoria had to be carried in the Colleges before being submitted to the Council of the People, and afterwards to the Council of the Commune.