The departure of the count having delivered Lucca from her tyrant, and the Florentines from their fear of his soldiery, the former prepared for her defense, and the latter resumed the siege. They appointed the count of Urbino to conduct their forces, and he pressed the Lucchese so closely, that they were again compelled to ask the assistance of the duke, who dispatched Niccolo Piccinino, under the same pretense as he previously sent Count Francesco. The Florentine forces met him on his approach to Lucca, and at the passage of the Serchio a battle ensued, in which they were routed, the commissary with a few of his men escaping to Pisa. This defeat filled the Florentines with dismay, and as the enterprise had been undertaken with the entire approbation of the great body of the people, they did not know whom to find fault with, and therefore railed against those who had been appointed to the management of the war, reviving the charges made against Rinaldo. They were, however, more severe against Giovanni Guicciardini than any other, declaring that if he had wished, he might have put a period to the war at the departure of Count Francesco, but that he had been bribed with money, for he had sent home a large sum, naming the party who had been intrusted to bring it, and the persons to whom it had been delivered. These complaints and accusations were carried to so great a length that the captain of the people, induced by the public voice, and pressed by the party opposed to the war, summoned him to trial. Giovanni appeared, though full of indignation. However his friends, from regard to their own character, adopted such a course with the Capitano as induced him to abandon the inquiry.
After this victory, the Lucchese not only recovered the places that had belonged to them, but occupied all the country of Pisa except Beintina, Calcinaja, Livorno, and Librafatta; and, had not a conspiracy been discovered that was formed in Pisa, they would have secured that city also. The Florentines again prepared for battle, and appointed Micheletto, a pupil of Sforza, to be their leader. The duke, on the other hand, followed up this victory, and that he might bring a greater power against the Florentines, induced the Genoese, the Siennese, and the governor of Piombino, to enter into a league for the defense of Lucca, and to engage Niccolo Piccinino to conduct