be his son’s tutor and administrator of his estate. Before he died Francesco called Castruccio to him, and prayed him to show Pagolo that goodwill which he (Francesco) had always shown to HIM, and to render to the son the gratitude which he had not been able to repay to the father. Upon the death of Francesco, Castruccio became the governor and tutor of Pagolo, which increased enormously his power and position, and created a certain amount of envy against him in Lucca in place of the former universal goodwill, for many men suspected him of harbouring tyrannical intentions. Among these the leading man was Giorgio degli Opizi, the head of the Guelph party. This man hoped after the death of Messer Francesco to become the chief man in Lucca, but it seemed to him that Castruccio, with the great abilities which he already showed, and holding the position of governor, deprived him of his opportunity; therefore he began to sow those seeds which should rob Castruccio of his eminence. Castruccio at first treated this with scorn, but afterwards he grew alarmed, thinking that Messer Giorgio might be able to bring him into disgrace with the deputy of King Ruberto of Naples and have him driven out of Lucca.
The Lord of Pisa at that time was Uguccione of the Faggiuola of Arezzo, who being in the first place elected their captain afterwards became their lord. There resided in Paris some exiled Ghibellines from Lucca, with whom Castruccio held communications with the object of effecting their restoration by the help of Uguccione. Castruccio also brought into his plans friends from Lucca who would not endure the authority of the Opizi. Having fixed upon a plan to be followed, Castruccio cautiously fortified the tower of the Onesti, filling it with supplies and munitions of war, in order that it might stand a siege for a few days in case of need. When the night came which had been agreed upon with Uguccione, who had occupied the plain between the mountains and Pisa with many men, the signal was given, and without being observed Uguccione approached the gate of San Piero and set fire to the portcullis. Castruccio raised a great uproar within the city, calling the people to arms and