Jacques Coeur was accused "of having sold arms to the infidels, of having coined light crowns, of having pressed on board of his vessels, at Montpellier, several individuals, of whom one had thrown himself into the sea from desperation, and lastly of having appropriated to himself presents made to the king, in several towns of Languedoc, and of having practised in that country frequent exaction, to the prejudice of the king as well as of his subjects." After twenty-two months of imprisonment, Jacques Coeur, on the 29th of May, 1453, was convicted, in the king's name, on divers charges, of which several entailed a capital penalty; but "whereas Pope Nicholas V.had issued a rescript and made request in favor of Jacques Coeur, and regard also being had to services received from him," Charles VII.

spared his life, "on condition that he should pay to the king a hundred thousand crowns by way of restitution, three hundred thousand by way of fine, and should be kept in prison until the whole claim was satisfied;" and the decree ended as follows: "We have declared and do declare all the goods of the said Jacques Coeur confiscated to us, and we have banished and do banish this Jacques Coeur forever from this realm, reserving thereanent our own good pleasure." After having spent nearly three years more in prison, transported from dungeon to dungeon, Jacques Coeur, thanks to the faithful and zealous affection of a few friends, managed to escape from Beaucaire, to embark at Nice and to reach Rome, where Pope Nicholas V.welcomed him with tokens of lively interest.

Nicholas died shortly afterwards, just when he was preparing an expedition against the Turks.

His successor, Calixtus III., carried out his design, and equipped a fleet of sixteen galleys.

This fleet required a commander of energy, resolution, and celebrity.