sentences:  Two years later (1464) the Francesco Sforza, Duke of Milan, overthrew the power of the Campofregoso family at Genoa and promptly proceeded to lay claim to Corsica.His lieutenant had no difficulty in making the island accept the overlordship of Milan; but when, in 1466, Francesco Sforza died, a quarrel broke out, and Milanese suzerainty became purely nominal save in the coastal towns.Finally, in 1484, Tommasino persuaded the duke to grant him the government of the island.