At this time the Dutch made war upon the Venetians, and Boccolino of Osimo, in the Marca, caused that place to revolt from the pope, and assumed the sovereignty. After a variety of fortune, he was induced to restore the city to the pontiff and come to Florence, where, under the protection of Lorenzo de' Medici, by whose advice he had been prevailed upon to submit, he lived long and respected. He afterward went to Milan, but did not experience such generous treatment; for Lodovico caused him to be put to death. The Venetians were routed by the Dutch, near the city of Trento, and Roberto da S. Severino, their captain, was slain. After this defeat, the Venetians, with their usual good fortune, made peace with the Dutch, not as vanquished, but as conquerors, so honorable were the terms they obtained.
About this time, there arose serious troubles in Romagna. Francesco d'Orso, of Furli, was a man of great authority in that city, and became suspected by the count Girolamo, who often threatened him. He consequently, living under great apprehensions, was advised by his friends to provide for his own safety, by the immediate adoption of such a course as would relieve him from all further fear of the count. Having considered the matter and resolved to attempt it, they fixed upon the market day, at Furli, as most suitable for their purpose; for many of their friends being sure to come from the country, they might make use of their services without having to bring them expressly for the occasion. It was the month of May, when most Italians take supper by daylight. The conspirators thought the most convenient hour would be after the count had finished his repast; for his household being then at their meal, he would remain in the chamber almost alone. Having fixed upon the hour, Francesco went to the count's residence, left his companions in the hall, proceeded to his apartment, and desired an attendant to say he wished for an interview. He was admitted, and after a few words of pretended communication, slew him, and calling to his associates, killed the attendant. The governor of the place coming by accident to speak with the count, and entering the apartment with a few of his people, was also slain. After this slaughter, and in the midst of a great tumult, the count's body was thrown from the window, and with the cry of "church and liberty," they roused the people (who hated the avarice and cruelty of the count) to arms, and having plundered his house, made the Countess Caterina and her children prisoners. The fortress alone had to be taken to bring the enterprise to a successful issue; but the Castellan would not consent to its surrender. They begged the countess would desire him to comply with their wish, which she promised to do, if they would allow her to go into the fortress, leaving her children as security for the performance of her promise. The conspirators trusted her, and permitted her to enter; but as soon as she was within, she threatened them with death and every kind of torture in revenge for the murder of her husband; and upon their menacing her with the death of her children, she said she had the means of getting more. Finding they were not supported by the pope, and that Lodovico Sforza, uncle to the countess, had sent forces to her assistance, the conspirators became terrified, and taking with them whatever property they could carry off, they fled to Citta di Castello. The countess recovered the state, and avenged the death of her husband with the utmost cruelty. The Florentines hearing of the count's death, took occasion to recover the fortress of Piancaldoli, of which he had formerly deprived them, and, on sending some forces, captured it; but Cecco, the famous engineer, lost his life during the siege.
To this disturbance in Romagna, another in that province, no less important, has to be added. Galeotto, lord of Faenza, had married the daughter of Giovanni Bentivogli, prince of Bologna. She, either through jealousy or ill treatment by her husband, or from the depravity of her own nature, hated him to such a degree, that she determined to deprive him of his possessions and his life; and pretending sickness, she took to her bed, where, having induced Galeotto to visit her, he was slain by assassins, whom she had concealed for that purpose in the apartment. She had acquainted her father with her design, and he hoped, on his son-in-law's death, to become lord of Faenza. A great tumult arose as soon as the murder was known, the widow, with an infant son, fled into the fortress, the people took up arms, Giovanni Bentivogli, with a condottiere of the duke of Milan, named Bergamino, engaged for the occasion, entered Faenza with a considerable force, and Antonio Boscoli, the Florentine commissary, was also there. These leaders being together, and discoursing of the government of the place, the men of Val di Lamona, who had risen unanimously upon learning what had occurred, attacked Giovanni and Bergamino, the latter of whom they slew, made the former prisoner, and raising the cry of "Astorre and the Florentines," offered the city to the commissary. These events being known at Florence, gave general offense; however, they set Giovanni and his daughter at liberty, and by the universal desire of the people, took the city and Astorre under their protection. Besides these, after the principal differences of the greater powers were composed, during several years tumults prevailed in Romagna, the Marca, and Sienna, which, as they are unimportant, it will be needless to recount. When the duke of Calabria, after the war of 1478, had left the country, the distractions of Sienna became more frequent, and after many changes, in which, first the plebeians, and then the nobility, were victorious, the latter and length maintained the superiority, and among them Pandolfo and Jacopo Petrucci obtained the greatest influence, so that the former being distinguished for prudence and the latter for resolution, they became almost princes in the city.
The Florentines after the war of Serezana, lived in great prosperity until 1492, when Lorenzo de' Medici died; for he having put a stop to the internal wars of Italy, and by his wisdom and authority established peace, turned his thoughts to the advancement of his own and the city's interests, and married Piero, his eldest son, to Alfonsina, daughter of the Cavaliere Orsino. He caused Giovanni, his second son, to be raised to the dignity of cardinal. This was the more remarkable from its being unprecedented; for he was only fourteen years of age when admitted to the college; and became the medium by which his family attained to the highest earthly glory. He was unable to make any particular provision for Guiliano, his third son, on account of his tender years, and the shortness of his own life. Of his daughters, one married Jacopo Salviati; another, Francesco Cibo; the third, Piero Ridolfi; and the fourth, whom, in order to keep his house united, he had married to Giovanni de' Medici, died. In his commercial affairs he was very unfortunate, from the improper conduct of his agents, who in all their proceedings assumed the deportment of princes rather than of private persons; so that in many places, much of his property was wasted, and he had to be relieved by his country with large sums of money. To avoid similar inconvenience, he withdrew from mercantile pursuits, and invested his property in land and houses, as being less liable to vicissitude. In the districts of Prato, Pisa, and the Val di Pesa, he purchased extensively, and erected buildings, which for magnificence and utility, were quite of regal character. He next undertook the improvement of the city, and as many parts were unoccupied by buildings, he caused new streets to be erected in them, of great beauty, and thus enlarged the accommodation of the inhabitants. To enjoy his power in security and repose, and conquer or resist his enemies at a distance, in the direction of Bologna he fortified the castle of Firenzuola, situated in the midst of the Appennines; toward Sienna he commenced the restoration and fortification of the Poggio Imperiale; and he shut out the enemy in the direction of Genoa, by the acquisition of Pietra Santa and Serezana. For the greater safety of the city, he kept in pay the Baglioni, at Perugia, and the Vitelli, at Citta di Castello, and held the government of Faenza wholly in his own power; all which greatly contributed to the repose and prosperity of Florence. In peaceful times, he frequently entertained the people with feasts, and exhibitions of various events and triumphs of antiquity; his object being to keep the city abundantly supplied, the people united, and the nobility honored. He was a great admirer of excellence in the arts, and a patron of literary men, of which Agnolo da Montepulciano, Cristofero Landini, and Demetrius Chalcondylas, a Greek, may afford sufficient proofs. On this account, Count Giovanni della Mirandola, a man of almost supernatural genius, after visiting every court of Europe, induced by the munificence of Lorenzo, established his abode at Florence. He took great delight in architecture, music, and poetry, many of his comments and poetical compositions still remaining. To facilitate the study of literature to the youth of Florence, he opened a university at Pisa, which was conducted by the most distinguished men in Italy. For Mariano da Chinazano, a friar of the order of St. Augustine, and an excellent preacher, he built a monastery in the neighborhood of Florence. He enjoyed much favor both from fortune and from the Almighty; all his enterprises were brought to a prosperous termination, while his enemies were unfortunate; for, besides the conspiracy of the Pazzi, an attempt was made to murder him in the Carmine, by Batista Frescobaldi, and a similar one by Baldinetto da Pistoja, at his villa; but these persons, with their confederates, came to the end their crimes deserved. His skill, prudence, and fortune, were acknowledged with admiration, not only by the princes of Italy, but by those of distant countries; for Matthias, king of Hungary, gave him many proofs of his regard; the sultan sent ambassadors to him with valuable presents, and the Turkish emperor placed in his hands Bernardo Bandini, the murderer of his brother. These circumstances raised his fame throughout Italy, and his reputation for prudence constantly increased; for in council he was eloquent and acute, wise in determination, and prompt and resolute in execution. Nor can vices be alleged against him to sully so many virtues; though he was fond of women, pleased with the company of facetious and satirical men, and amused with the games of the nursery, more than seemed consistent with so great a character; for he was frequently seen playing with his children, and partaking of their infantine sports; so that whoever considers this gravity and cheerfulness, will find united in him dispositions which seem almost incompatible with each other. In his later years, he was greatly afflicted; besides the gout, he was troubled with excruciating pains in the stomach, of which he died in April, 1492, in the forty-fourth year of his age; nor was there ever in Florence, or even in Italy, one so celebrated for wisdom, or for whose loss such universal regret was felt. As from his death the greatest devastation would shortly ensue, the heavens gave many evident tokens of its approach; among other signs, the highest pinnacle of the church of Santa Reparata was struck with lightning, and great part of it thrown down, to the terror and amazement of everyone. The citizens and all the princes of Italy mourned for him, and sent their ambassadors to Florence, to condole with the city on the occasion; and the justness of their grief was shortly after apparent; for being deprived of his counsel, his survivors were unable either to satisfy or restrain the ambition of Lodovico Sforza, tutor to the duke of Milan; and hence, soon after the death of Lorenzo, those evil plants began to germinate, which in a little time ruined Italy, and continue to keep her in desolation.