When he was within sight of the ramparts he heard that on the previous evening, before it was night, the French had been admitted into the town.

Trivulzio had been to visit King Charles at Teano, and had offered, in the name of his troops and of the Capuans, to surrender Capua; he had even added, says Guicciardini, that he did not despair of bringing King Ferdinand himself to an arrangement, if a suitable provision were guaranteed to him.

"I willingly accept the offer you make me in the name of your troops and of the Capuans," answered Charles: "as for the Arragonese prince, he shall be well received if he come to me; but let him understand that not an inch of ground shall be left to him in this kingdom; in France he shall have honors and beautiful domains." On the 18th of February Charles entered Capua amidst the cheers of the people; and on the same day Trivulzio went over to his service with a hundred lances.

On returning to Naples, Ferdinand found the gates closed, and could not get into Castel Nuovo save by a postern.
At that very moment the mob was pillaging his stables; he went down from the fortress, addressed the crowd collected beneath the ramparts in a few sad and bitter words, into which he tried to infuse some leaven of hope, took certain measures to enable the two forts of Naples, Castel Nuovo and Castel dell Uovo, to defend themselves for a few days longer, and, on the 23d of February, went for refuge to the island of Ischia, repeating out loud, as long as he had Naples in sight, this versicle from the Psalms: "Except the Lord keep the city, the watchman waketh but in vain!" At Ischia itself "he had a fresh trial to make," says Guicciardini, "of his courage and of the ungrateful faithlessness displayed towards those whom Fortune deserts." The governor of the island refused to admit him accompanied by more than one man.

The prince, so soon as he got in, flung himself upon him, poniard in hand, with such fury and such an outburst of kingly authority, that all the garrison, astounded, submitted to him and gave up to him the fort and its rock.