But Caesar Borgia, who had followed Louis XII with a view to playing his part in the great hunting-ground of Italy, scarcely waited for him to attain his end when he claimed the fulfilment of his promise, which the king with his accustomed loyalty hastened to perform.

He instantly put at the disposal of Caesar three hundred lances under the command of Yves d'Alegre, and four thousand Swiss under the command of the bailiff of Dijon, as a help in his work of reducing the Vicars of the Church.
We must now explain to our readers who these new personages were whom we introduce upon the scene by the above name.
During the eternal wars of Guelphs and Ghibelines and the long exile of the popes at Avignon, most of the towns and fortresses of the Romagna had been usurped by petty tyrants, who for the most part hard received from the Empire the investiture of their new possessions; but ever since German influence had retired beyond the Alps, and the popes had again made Rome the centre of the Christian world, all the small princes, robbed of their original protector, had rallied round the papal see, and received at the hands of the pope a new investiture, and now they paid annual dues, for which they received the particular title of duke, count, or lord, and the general name of Vicar of the Church.
It had been no difficult matter for Alexander, scrupulously examining the actions and behaviour of these gentlemen during the seven years that had elapsed since he was exalted to St.Peter's throne, to find in the conduct of each one of them something that could be called an infraction of the treaty made between vassals and suzerain; accordingly he brought forward his complaints at a tribunal established for the purpose, and obtained sentence from the judges to the effect that the vicars of the Church, having failed to fulfil the conditions of their investiture, were despoiled of their domains, which would again become the property of the Holy See.

As the pope was now dealing with men against whom it was easier to pass a sentence than to get it carried out, he had nominated as captain-general the new Duke of Valentinois, who was commissioned to recover the territories for his own benefit.

The lords in question were the Malatesti of Rimini, the Sforza of Pesaro, the Manfredi of Faenza, the Riarii of Imola and Farli, the Variani of Camerina, the Montefeltri of Urbino, and the Caetani of Sermoneta.
But the Duke of Valentinois, eager to keep as warm as possible his great friendship with his ally and relative Louis XII, was, as we know, staying with him at Milan so long as he remained there, where, after a month's occupation, the king retraced his steps to his own capital, the Duke of Valentinois ordered his men-at-arms and his Swiss to await him between Parma and Modena, and departed posthaste for Rome, to explain his plans to his father viva voce and to receive his final instructions.

When he arrived, he found that the fortune of his sister Lucrezia had been greatly augmented in his absence, not from the side of her husband Alfonso, whose future was very uncertain now in consequence of Louis's successes, which had caused some coolness between Alfonso and the pope, but from her father's side, upon whom at this time she exercised an influence mare astonishing than ever.