[439] _Filelfi Opera, p. 75._ On the death of the duke of Milan, Filelfo had experienced considerable inconvenience, in consequence of the war between Francesco Sforza and the Milanese. In the course of this contest he wavered between the two parties; but the success of Sforza at length attached him to the interests of that enterprising chieftain. Soon after the elevation of Nicolas V. to the pontificate, Filelfo was invited by Alfonso, king of Naples, to present to him in person a copy of his satires. On his way to Naples he passed through Rome, where he paid his respects to the pontiff, who endeavoured, but in vain, to retain him in his service by the promise of a liberal stipend. On his arrival at the Neapolitan capital, he was received with great kindness by Alfonso, at whose command he was crowned with laurel in the midst of the camp. From Naples he returned to Milan, where he received the afflicting intelligence, that at the sack of Constantinople by the Turks, Manfredina Doria, his mother-in-law, and two of her daughters had been carried away captives. It is an astonishing instance of the power of song, that he procured their redemption by an ode addressed to Mahomet II. In the year 1454, he was reconciled to Cosmo de’ Medici, by whose son Pietro he was treated with distinguished regard. During the life of Francesco Sforza, Filelfo was enabled, by the munificence of that prince, to live in a state of splendor which was very congenial to his dispositions; but on the death of that generous patron he received from his successor, Galeazzo Maria, little more than empty promises. In consequence of the pressure of distress, he undertook at the age of seventy-two to read lectures on Aristotle. After sustaining a variety of afflictions in consequence of the distracted state into which Milan was thrown by the death of Galeazzo, he received from Lorenzo de’ Medici an invitation to read lectures on the Greek language at Florence. This invitation he gladly accepted, and at the advanced age of eighty-three he repaired to the Tuscan capital, for the purpose of resuming the task of public instruction. The fatigues of his journey however overpowered the strength of his constitution, and soon after his arrival in Florence he closed a life of assiduous study, and of almost ceaseless turbulence. For an elaborate history of Filelfo, see _Memoires de l’Academie des Inscriptions, tom. x._ [440] _Ton. Tr. tom. ii. p. 161._