Christendom alarmed by the progress of the Turks--The Turks routed before Belgrade--Description of a remarkable hurricane--War against the Genoese and Gismondo Malatesti--Genoa submits to the king of France--Death of Alfonso king of Naples--Succeeded by his son Ferrando--The pope designs to give the kingdom of Naples to his nephew Piero Lodovico Borgia--Eulogy of Pius II.--Disturbances in Genoa between John of Anjou and the Fregosi--The Fregosi subdued--John attacks the kingdom of Naples--Ferrando king of Naples routed--Ferrando reinstated--The Genoese cast off the French yoke--John of Anjou routed in the kingdom of Naples. The pope, though anxious to restrain Jacopo Piccinino, did not neglect to make provision for the defense of Christendom, which seemed in danger from the Turks. He sent ambassadors and preachers into every Christian country, to exhort princes and people to arm in defense of their religion, and with their persons and property to contribute to the enterprise against the common enemy. In Florence, large sums were raised, and many citizens bore the mark of a red cross upon their dress to intimate their readiness to become soldiers of the faith. Solemn processions were made, and nothing was neglected either in public or private, to show their willingness to be among the most forward to assist the enterprise with money, counsel, or men. But the eagerness for this crusade was somewhat abated, by learning that the Turkish army, being at the siege of Belgrade, a strong city and fortress in Hungary, upon the banks of the Danube, had been routed and the emperor wounded; so that the alarm felt by the pope and all Christendom, on the loss of Constantinople, having ceased to operate, they proceeded with deliberately with their preparations for war; and in Hungary their zeal was cooled through the death of Giovanni Corvini the Waiwode, who commanded the Hungarian forces on that memorable occasion, and fell in the battle.