Ferrante's second marriage with the young Princess Joan of Aragon, a sister of Ferdinand the Catholic. The duchess and her children travelled by land to Pisa, where galleys were waiting to conduct them to Naples, and reached her father's court on the 1st of June, 1477. Here Leonora spent the next four months, and in September, gave birth to a second son, who was named Ferrante, after his royal grandfather. But soon news reached Naples that war had broken out in Northern Italy, and that Duke Ercole had been chosen Captain-general of the Florentine armies. In his absence the presence of the duchess was absolutely necessary at Ferrara, and early in November Leonora left Naples and hastened home to take up the reins of government and administer the state in her lord's stead. She took her elder daughter Isabella with her, but left her new-born son at Naples, together with his little sister Beatrice, from whom the old King Ferrante refused to part. This bright-eyed child, who had won her grandfather's affections at this early age, remained at Naples for the next eight years, and grew up in the royal palace on the terraced steps of that enchanted shore, where even then Sannazzaro was dreaming of Arcadia, and where Lorenzo de' Medici loved to talk over books and poetry with his learned friend the Duchess Ippolita. Beatrice was too young to realize the rare degree of culture which had made Alfonso's and Ferrante's court the favourite abode of the Greek and Latin scholars of the age, too innocent to be aware of the dark deeds which threw a shadow over these sunny regions, where the strange medley of luxury and vice, of refinement and cruelty, recalled the days of Imperial Rome. But the balmy breath of these Southern climes, the soft luxuriant spell of blue seas and groves of palm and cassia, sank deep into the child's being, and something of the fire and passion, the mirth and gaiety, of the dwellers in this delicious land passed into her soul, and helped to mould her nature during these years that she spent far from mother and sister at King Ferrante's court.

In these early days many personages with whom she was to be closely associated in after-years were living at Naples. There were scholars and poets whom she was to meet again in Milan at her husband's court, and who would be glad to remind her that they had known her as a child in her grandfather's palace. There was Pontano, the founder of the Academy of Naples, who was busy writing his Latin eclogues on the myrtle bowers of Baiae and the orange groves of Sorrento. There was her aunt, the accomplished Ippolita Sforza, Duchess of Calabria, who had learnt Greek of the great teacher Lascaris in her young days at Milan, and whose wedding had brought the magnificent Lorenzo to the court of the Sforzas. And for playmates the little Beatrice had Ippolita's children: the boy Ferrante, whose chivalrous nature endeared him to his Este cousins, even when their husbands joined with the French invaders to drive him from his father's throne; and the girl Isabella, who was already affianced to the young Duke Giangaleazzo, who was in future years to become her companion and rival at the court of Milan. Here, too, in the summer of 1479, came a new visitor in the shape of Duchess Ippolita's brother, Lodovico Sforza, surnamed Il Moro, himself the younger son of the great Duke Francesco. On his elder brother Sforza's death, the King of Naples had invested him with the duchy of Bari, and now he promised him men and money with which to assert his claims against his sister-in-law, the widowed Duchess Bona and the minions who had driven him and his brothers out of their native land. In June, 1477, only a few days after Leonora and her children left Ferrara, the exiled prince had arrived there on his way to Pisa, and had been courteously entertained by Duke Ercole in the Schifanoia Palace. Since then he had spent two dreary years in exile at Pisa, fretting out his heart in his enforced idleness, and pining for the hour of release. That hour was now at hand. Before the end of the year, Lodovico Sforza had, by a succession of bold manœuvres, driven out his rivals and was virtually supreme in Milan. The first step which the new regent took was to ally himself with the Duke of Ferrara. The houses of Sforza and Este had always been on friendly terms, and Ercole's father Niccolo had presented Francesco Sforza with a famous diamond in acknowledgment of the services rendered him by the great Condottiere. When Francesco's son and successor, Duke Galeazzo Maria, was murdered in 1476, his widow, Duchess Bona, had renewed the old alliance with Ferrara, and a marriage had been arranged between her infant daughter Anna Sforza and Duke Ercole's new-born son and heir Alfonso. In May, 1477, this betrothal was proclaimed in Milan, and a fortnight later the nuptial contract was signed at Ferrara. The union of the two houses was celebrated by solemn processions and thanksgivings throughout the duchy, and the infant bridegroom was carried in the arms of his chamberlain to meet the Milanese ambassador, who appeared on behalf of the little three-year-old bride. Seven years afterwards, Duchess Leonora sent a magnificent doll with a trousseau of clothes designed by the best artists in Ferrara, as a gift to the little daughter-in-law whom she had not yet seen.

In 1480, Lodovico Sforza formally asked Ercole to give him the hand of his elder daughter Isabella, then a child of six. Lodovico himself was twenty-nine, and besides being a man of remarkable abilities and singularly handsome presence, had the reputation of being the richest prince in Italy. Duke Ercole further saw the great importance of strengthening the alliance with Milan at a time when Ferrara was again threatened by her hereditary enemies, the Pope and Venice. Unfortunately, his youthful daughter had already been sought in marriage by Federico, Marquis of Mantua, on behalf of his elder son, Giovanni Francesco; and Ercole, unwilling to offend so near a neighbour, and yet reluctant to lose the chance of a second desirable alliance, offered Lodovico Sforza the hand of his younger daughter, Beatrice. The Duke of Bari made no objection to this arrangement, and on St. George's Day, Ercole addressed the following letter to his old ally, Marquis Federico:—

"Most illustrious Lord and dearest Brother,

"This is to inform you that the most illustrious Madonna Duchess of Milan and His Illustrious Highness Lodovico Sforza have sent their ambassador, M. Gabriele Tassino, to ask for our daughter Madonna Isabella on behalf of Signor Lodovico. We have replied that to our regret this marriage was no longer possible, since we had already entered into negotiations on the subject with your Highness and your eldest son. But since we have another daughter at Naples, who is only about a year younger, and who has been adopted by his Majesty the King of Naples as his own child, we have written to acquaint His Serene Majesty with the wish of these illustrious Persons, and have asked him if he will consent to accept the said Signor Lodovico as his kinsman, since without his leave we were unable to dispose of our daughter Beatrice's hand. The said Persons having expressed themselves as well content with the proceeding, out of respect for the King's Majesty he has now declared his approval of this marriage, to which we have accordingly signified our consent. We are sure that you will rejoice with us, seeing the close union and alliance that has long existed between us, and beg your Illustrious Highness to keep the matter secret for the present.

"Hercules, Dux Ferr., etc.[1]

Ferrara, 23rd April, 1480."