It chanced that a few days before peace had been concluded, a subsidy of 36,000 ducats reached Federigo from the King of Naples, which he immediately offered to return, as no longer required. Regarding this as an act of unusual conscientiousness, Alfonso desired him to retain the money on account of future services; whereupon the Count, after sending home his company from the Tuscan war, attended the Duke of Calabria to Naples, to offer acknowledgments in person. To his suggestion, while there, has been ascribed by Muzio and Baldi a double matrimonial alliance, now proposed between the hitherto hostile houses of Aragon and Sforza, as a means of cementing the new league, but of which only that of Hippolita Maria Sforza took effect. On the same authority we must attribute to him a selfish and ill-timed counsel, which marred that measure and perilled the peace of Italy. Whilst a party to the losing game which Sforza played in La Marca during 1445-6, several of his townships were seized by the Lord of Rimini, in whose possession they had since remained. With the ultimate hope of reclaiming these on some fitting opportunity, he is alleged to have reminded Alfonso of the scurvy trick played upon him in 1448 by Sigismondo, in passing over to the service of Florence after receiving his pay, and to have suggested such treachery as sufficient ground for specially excluding the latter from the league, and for reserving a right to make reprisals. The King adopted this hint the more readily, that he had other wrongs to settle with the Genoese and with Astorre Manfredi, seigneur of Imola; he accordingly, on ratifying the treaty of Lodi in January, 1455, introduced an exceptional clause against these three states, the effect of which was not only to keep up petty warfare in Romagna and Liguria, but eventually to entail upon his son a disputed succession which well-nigh cost him his crown.