The Capture at Sinigaglia was the culminating act of Cesare Borgia’s effort to destroy the factional and military dependencies that endangered his new principality. After the Orsini and their allies had assembled at Magione and provoked the revolt of Urbino, disturbances in Romagna, and grave dangers for the Duke, Cesare used negotiation, calculated generosity, and concealed intentions to draw their leaders into his hands. Their removal, followed by the conversion of their followers into his friends, gave him a firmer political foundation and left him master of the territories he had acquired.

Causes and Political Background

The immediate crisis arose from the growing recognition among the Orsini that the Duke’s expansion, and the increasing power of the Church associated with him, threatened their own position. They therefore assembled a council at Magione in the territory of Perugia. The council produced a revolt in Urbino, disorders throughout Romagna, and a succession of dangers that Cesare initially overcame with French assistance. The revolt exposed the weakness of relying on forces whose loyalty depended on temporary advantage rather than on attachment to the Duke himself.

Cesare had already seen this danger in his earlier campaigns. When he captured Faenza and turned toward Bologna, the Orsini took part reluctantly. After he seized the Dukedom of Urbino and prepared to move against Tuscany, Louis XII compelled him to abandon that design. Cesare consequently resolved to depend no longer on the arms or fortune of others. He weakened the Orsini and Colonna factions in Rome by winning over members of good birth, making them his gentlemen, providing them generously, and assigning them commands and offices suited to their rank. Within a few months, their former partisan loyalties had weakened and their hopes had become centered on the Duke.

The Stratagem at Sinigaglia

Once the Colonna leadership had been scattered, Cesare waited for an opportunity to crush the chiefs of the Orsini. Rather than confront them openly while still vulnerable to French intervention or other foreign pressures, he resorted to stratagem and carefully concealed his designs. Through the mediation of Paolo, whom he secured with friendly attentions and supplies of clothes, money, and horses, Cesare persuaded the Orsini that reconciliation and continued cooperation were possible.

The Orsini were drawn by this deception to Sinigaglia, where the leaders were seized and disposed of. The episode was not an isolated act of violence but the culmination of a deliberate political process: Cesare first separated followers from factional chiefs, then reduced the chiefs’ ability to resist, and finally used their confidence in his apparent friendliness to bring them within his reach. Once the leaders had been removed, their followers could be won over, and the Duke’s power no longer rested on an unstable coalition of rival captains.

Immediate Consequences

The capture enabled Cesare to hold Romagna together with the Dukedom of Urbino. He had also gained the good will of the populations of those states, who had begun to believe that their condition was improving under his authority. The removal of the factional leadership therefore had both a military and a political consequence: it eliminated active opposition while strengthening the appearance that the Duke could provide a more secure government than the divided powers he had displaced.

The event also explains the subsequent fate of Oliverotto of Fermo. After murdering his uncle Giovanni and the leading citizens of Fermo at a banquet, Oliverotto rode through the city, besieged the chief magistrate in the palace, forced obedience, killed likely opponents, and established civil and military ordinances that allowed him to retain power for a year and become formidable to his neighbours. His position might have remained secure had he not been overreached by Cesare Borgia when the Orsini and Vitelli were entrapped at Sinigaglia. Oliverotto was captured there and, one year after his parricidal crime, strangled together with Vitellozzo Vitelli.

Military and Political Significance

The Capture at Sinigaglia illustrates the wider principle that a new ruler must replace borrowed strength with forces and institutions that depend upon himself. Cesare first entered Romagna with French auxiliaries and captured Imola and Forli. Finding the French unreliable, he turned to mercenaries, taking the Orsini and Vitelli into his pay. When these men proved fickle, false, and treacherous, he discarded them and fell back on troops of his own raising. His reputation increased through each transition and was greatest when observers saw him as the sole master of his forces.

This progression gives the Sinigaglia episode its broader importance. Mercenaries were dangerous because they were ambitious, insubordinate, treacherous, and unwilling to risk their lives beyond the security of their pay; capable captains might seek their own aggrandizement, while incapable ones could ruin the prince. Auxiliaries presented an even sharper danger because they were united and controlled by their own officers: if defeated, the prince was undone, and if victorious, he could become their prisoner. Cesare’s destruction of the unreliable factional commanders was therefore part of the same movement by which he sought to establish an independent military base.

The episode also exemplifies the book’s distinction between the character of a conquest and the character of its settlement. A ruler who enters a province whose laws and language differ from his own must protect weaker neighbours, weaken stronger powers, and prevent an equally formidable stranger from gaining entry. Discontented inhabitants may invite such a stranger, and lesser powers will often join him out of hatred for the authority that previously kept them subject. Cesare’s action at Sinigaglia prevented the Orsini from becoming the internal channel through which a rival power could re-enter his territories.

Place in the Book’s Historical Argument

The event is presented as an example of political capacity rather than as a simple military victory. Cesare obtained his principality through the favourable fortune of his father, Pope Alexander VI, and lost it when those foundations were overturned by the extraordinary malignity of Fortune. Yet the book insists that this final failure was not caused by a lack of prudence or effort. Before Fortune turned against him, Cesare had attempted to build the foundations that a ruler who rises through another’s arms and fortune must construct after gaining power.

The contrast with Alexander the Great’s conquest of Asia clarifies the argument. Alexander inherited a kingdom whose government resembled that of the Turk: authority was concentrated in the sole prince and his servants. After Alexander defeated Darius utterly and Darius died, the country remained secure because it contained no powerful hereditary lords capable of organizing independent resistance; the later disorders arose from the ambition and jealousy of Alexander’s successors. Cesare faced a more fragmented political world, in which factions, rival captains, foreign aid, and local loyalties could repeatedly reopen the struggle. Sinigaglia was consequently a momentary triumph of centralized control over the dispersed powers that made a new Italian principality difficult to retain.