Frate Puccio had already taken possession of nearly the whole territory, except the fortress of Corzano. Gambacorti was accompanied, while transferring his dominions, by a young Pisan of great courage and address, named Antonio Gualandi, who, considering the whole affair, the strength of the place, the well known bravery of the garrison, their evident reluctance to give it up, and the baseness of Gambacorti, at once resolved to make an effort to prevent the fulfillment of his design; and Gherardo being at the entrance, for the purpose of introducing the Aragonese, he pushed him out with both his hands, and commanded the guards to shut the gate upon such a scoundrel, and hold the fortress for the Florentine republic. When this circumstance became known in Bagno and the neighboring places, the inhabitants took up arms against the king’s forces, and, raising the Florentine standard, drove them out. The Florentines learning these events, imprisoned Gherardo’s son, and sent troops to Bagno for the defense of the territory, which having hitherto been governed by its own prince, now became a vicariate. The traitor Gherardo escaped with difficulty, leaving his wife, family, and all his property, in the hands of those whom he had endeavored to betray. This affair was considered by the Florentines of great importance; for had the king succeeded in securing the territory, he might have overrun the Val di Tavere and the Casentino at his pleasure, and would have caused so much annoyance, that they could no longer have allowed their whole force to act against the army of the Aragonese at Sienna.
In addition to the preparations made by the Florentines in Italy to resist the hostile League, they sent as ambassador, Agnolo Acciajuoli, to request that the king of France would allow Rene of Anjou to enter Italy in favor of the duke and themselves, and also, that by his presence in the country, he might defend his friends and attempt the recovery of the kingdom of Naples; for which purpose they offered him assistance in men and money. While the war was proceeding in Lombardy and Tuscany, the ambassador effected an