Two days before the treaty was signed, Bentivogli had seized four members of the powerful House of Marescotti. This family was related to the exiled Malvezzi, who were in arms with Cesare, and Bentivogli feared that communications might be passing between the two to his undoing. On that suspicion he kept them prisoners for the present, nor did be release them when the treaty was signed, nor yet when, amid public rejoicings expressing the relief of the Bolognese, it was published on May 2.

Hermes Bentivogli—Giovanni’s youngest son—was on guard at the palace with several other young Bolognese patricians, and he incited these to go with him to make an end of the traitors who had sought to destroy the peace by their alleged plottings with Bentivogli’s enemies in Cesare’s camp. He led his companions to the chamber where the Marescotti were confined, and there, more or less in cold blood, those four gentlemen were murdered for no better reason—ostensibly—than because it was suspected they had been in communication with their relatives in the Duke of Valentinois’s army. That was the way of the Cinquecento, which appears to have held few things of less account than human life.

In passing, it may be mentioned that Guicciardini, of course, does his ludicrous best to make this murder appear—at least indirectly, since directly it would be impossible—the work of Cesare Borgia.

As for Castel Bolognese itself, Cesare Borgia sent a thousand demolishers in the following July to raze it to the ground. It is said to have been the most beautiful castle in the Romagna; but Cesare had other qualities than beauty to consider in the matter of a stronghold. Its commanding position rendered it almost in the nature of a gateway controlling, as we know, the road from Faenza to Imola, and its occupation by the Bolognese or other enemies in time of disturbance might be of serious consequence to Cesare. Therefore he ruthlessly ordered Ramiro de Lorqua to set about its demolition.

The Council of Castel Bolognese made great protest, and implored Ramiro to stay his hand until they should have communicated with the duke petitioning for the castle’s preservation; but Ramiro—a hard, stern man, and Cesare’s most active officer in the Romagna—told them bluntly that to petition the duke in such a matter would be no better than a waste of time. He was no more than right; for Cesare, being resolved upon the expediency of the castle’s destruction, would hardly be likely to listen to sentimental reasonings for its preservation. Confident of this, Ramiro without more ado set about the execution of the orders he had received. He pulled down the walls and filled up the moat, until nothing remained so much as to show the place where the fortress had stood.

Another fortress which shared the fate of Castel Bolognese was the Castle of Sant’ Arcangelo, and similarly would Cesare have disposed of Solarolo, but that, being of lesser importance and the inhabitants offering, in their petition for its preservation, to undertake, themselves, the payment of the Castellan, he allowed it to remain.

Scarcely was the treaty with Bologna signed than Cesare received letters from the Pope recalling him to Rome, and recommending that he should not molest the Florentines in his passage—a recommendation which Alexander deemed very necessary considering the disposition towards Florence of Vitelli and Orsini. He foresaw that they would employ arguments to induce Valentinois into an enterprise of which all the cost would be his, and all the possible profit their own.

The duke would certainly have obeyed and avoided Tuscany, but that—precisely as the shrewd Pope had feared—Vitelli and Orsini implored him to march through Florentine territory. Vitelli, indeed, flung himself on his knees before Cesare in the vehemence of his supplications, urging that his only motive was to effect the deliverance from his unjust imprisonment of Cerbone, who had been his executed brother’s chancellor. Beyond that, he swore he would make no demands upon Florence, that he would not attempt to mix himself in the affairs of the Medici, and that he would do no violence to town or country.

Thus implored, Cesare gave way. Probably he remembered the very circumstances under which Vitelli had joined his banner, and considered that he could not now oppose a request backed by a promise of so much moderation; so on May 7 he sent his envoys to the Signory to crave leave of passage for his troops through Florentine territory.

Whilst still in the Bolognese he was sought out by Giuliano de’Medici, who begged to be allowed to accompany him, a request which Cesare instantly refused, as being contrary to that to which he had engaged himself, and he caused Giuliano to fall behind at Lojano. Nor would he so much as receive in audience Piero de’Medici, who likewise sought to join him in Siennese territory, as soon as he perceived what was toward. Yet, however much the duke protested that he had no intention to make any change in the State of Florence, there were few who believed him. Florence, weary and sorely reduced by the long struggle of the Pisan war, was an easy prey. Conscious of this, great was her anxiety and alarm at Cesare’s request for passage. The Signory replied granting him the permission sought, but imposing the condition that he should keep to the country, refraining from entering any town, nor bring with him into Florentine territory Vitelli, Orsini, or any other enemy of the existing government. It happened, however, that when the Florentine ambassador reached him with this reply the duke was already over the frontier of Tuscany with the excluded condottieri in his train.