to give any assistance to their own flanks. So, without much difficulty, Castruccio put the enemy to flight on both flanks, and the centre battalions took to flight when they found themselves exposed to attack, without having a chance of displaying their valour. The defeat was complete, and the loss in men very heavy, there being more than ten thousand men killed with many officers and knights of the Guelph party in Tuscany, and also many princes who had come to help them, among whom were Piero, the brother of King Ruberto, and Carlo, his nephew, and Filippo, the lord of Taranto. On the part of Castruccio the loss did not amount to more than three hundred men, among whom was Francesco, the son of Uguccione, who, being young and rash, was killed in the first onset. This victory so greatly increased the reputation of Castruccio that Uguccione conceived some jealousy and suspicion of him, because it appeared to Uguccione that this victory had given him no increase of power, but rather than diminished it. Being of this mind, he only waited for an opportunity to give effect to it. This occurred on the death of Pier Agnolo Micheli, a man of great repute and abilities in Lucca, the murderer of whom fled to the house of Castruccio for refuge. On the sergeants of the captain going to arrest the murderer, they were driven off by Castruccio, and the murderer escaped. This affair coming to the knowledge of Uguccione, who was then at Pisa, it appeared to him a proper opportunity to punish Castruccio. He therefore sent for his son Neri, who was the governor of Lucca, and commissioned him to take Castruccio prisoner at a banquet and put him to death. Castruccio, fearing no evil, went to the governor in a friendly way, was entertained at supper, and then thrown into prison. But Neri, fearing to put him to death lest the people should be incensed, kept him alive, in order to hear further from his father concerning his intentions. Ugucionne cursed the hesitation and cowardice of his son, and at once set out from Pisa to Lucca with four hundred horsemen to finish the business in his own way; but he had not yet reached the baths when the Pisans rebelled and put his deputy to death and created Count Gaddo della Gherardesca their lord. Before Uguccione reached Lucca he heard of the occurrences at Pisa, but it did not appear wise to him to turn back, lest the Lucchese with the example of Pisa before them should close their gates against him. But the Lucchese, having heard of what had happened at Pisa, availed themselves of this opportunity to demand the liberation of Castruccio, notwithstanding that Uguccione had arrived in their city. They first began to speak of it in private circles, afterwards openly in the squares and streets; then they raised a tumult, and with arms in their hands went to Uguccione and demanded that Castruccio should be set at liberty. Uguccione, fearing that worse might happen, released him from prison. Whereupon Castruccio gathered