Upon this the duke, before his departure from Fano, which was to be on 30th December 1502, communicated his designs to eight of his most trusted followers, among whom were Don Michele and the Monsignor d’Euna, who was afterwards cardinal; and he ordered that, as soon as Vitellozzo, Pagolo Orsini, the Duke di Gravina, and Oliverotto should arrive, his followers in pairs should take them one by one, entrusting certain men to certain pairs, who should entertain them until they reached Sinigalia; nor should they be permitted to leave until they came to the duke’s quarters, where they should be seized.

The duke afterwards ordered all his horsemen and infantry, of which there were more than two thousand cavalry and ten thousand footmen, to assemble by daybreak at the Metauro, a river five miles distant from Fano, and await him there.  He found himself, therefore, on the last day of December at the Metauro with his men, and having sent a cavalcade of about two hundred horsemen before him, he then moved forward the infantry, whom he accompanied with the rest of the men-at-arms.

Fano and Sinigalia are two cities of La Marca situate on the shore of the Adriatic Sea, fifteen miles distant from each other, so that he who goes towards Sinigalia has the mountains on his right hand, the bases of which are touched by the sea in some places.  The city of Sinigalia is distant from the foot of the mountains a little more than a bow-shot and from the shore about a mile.  On the side opposite to the city runs a little river which bathes that part of the walls looking towards Fano, facing the high road.  Thus he who draws near to Sinigalia comes for a good space by road along the mountains, and reaches the river which passes by Sinigalia.  If he turns to his left hand along the bank of it, and goes for the distance of a bow-shot, he arrives at a bridge which crosses the river; he is then almost abreast of the gate that leads into Sinigalia, not by a straight line, but transversely.  Before this gate there stands a collection of houses with a square to which the bank of the river forms one side.

The Vitelli and Orsini having received orders to wait for the duke, and to honour him in person, sent away their men to several castles distant from Sinigalia about six miles, so that room could be made for the men of the duke; and they left in Sinigalia only Oliverotto and his band, which consisted of one thousand infantry and one hundred and fifty horsemen, who were quartered in the suburb mentioned above.  Matters having been thus arranged, the Duke Valentino left for Sinigalia, and when the leaders of the cavalry reached the bridge they did not pass over, but having opened it, one portion wheeled towards the river and the other towards the country, and a way was left in the middle through which the infantry passed, without stopping, into the town.