Filippo Visconti was, as we have said, in the fortress of Pavia.  But Fazino Cane, who in the affairs of Lombardy had become lord of Vercelli, Alessandria, Novara, and Tortona, and had amassed great riches, finding his end approach, and having no children, left his wife Beatrice heiress of his estates, and arranged with his friends that a marriage should be effected between her and Filippo.  By this union Filippo became powerful, and reacquired Milan and the whole of Lombardy.  By way of being grateful for these numerous favors, as princes commonly are, he accused Beatrice of adultery and caused her to be put to death.  Finding himself now possessed of greater power, he began to think of warring with Tuscany and of prosecuting the designs of Giovanni Galeazzo, his father.

Ladislaus, king of Naples, at his death, left to his sister Giovanna the kingdom and a large army, under the command of the principal leaders of Italy, among the first of whom was Sforza of Cotignuola, reputed by the soldiery of that period to be a very valiant man.  The queen, to shun the disgrace of having kept about her person a certain Pandolfello, whom she had brought up, took for her husband Giacopo della Marca, a Frenchman of the royal line, on the condition that he should be content to be called Prince of Tarento, and leave to her the title and government of the kingdom.  But the soldiery, upon his arrival in Naples, proclaimed him king; so that between the husband and the wife wars ensued; and although they contended with varying success, the queen at length obtained the superiority, and became an enemy of the pope.  Upon this, in order to reduce her to necessity, and that she might be compelled to throw herself into his lap, Sforza suddenly withdrew from her service without giving her any pervious notice of his intention to do so.  She thus found herself at once unarmed, and not having any other source, sought the assistance of Alfonzo, king of Aragon and Sicily, adopted him as her son, and engaged Braccio of Montone as her captain, who was of equal reputation in arms with Sforza, and inimical to the pope, on account of his having taken possession of Perugia and some other places belonging to the church.  After this, peace was made between the queen and the pontiff; but King Alfonzo, expecting she would treat him as she had her husband, endeavored secretly to make himself master of the strongholds; but, possessing acute observation, she was beforehand with him, and fortified herself in the castle of Naples.  Suspicions increasing between them, they had recourse to arms, and the queen, with the assistance of Sforza, who again resumed her service, drove Alfonzo out of Naples, deprived him of his succession, and adopted Louis of Anjou in his stead.  Hence arose new contests between Braccio, who took the part of Alfonzo, and Sforza, who defended the cause of the queen.  In the course of the war, Sforza was drowned in endeavoring to pass the river Pescara; the queen was thus again