Genoa, however, envied Pisa this increase of territory, claimed the island for herself, and backed her claim by arms. Corsica was rent by the struggle, and the Corsicans themselves were divided into hostile camps, one favoring Pisa, the other Genoa.

The leader of the Pisan faction, Guidice della Rocca, kept up, for many years, an unequal struggle, showing wonderful courage, fertility of resource, rigorous justice, and rare clemency. He killed his own nephew for having outraged a female prisoner for whose safety he, Della Rocca, had given his word. Old and blind, this hero was betrayed by his bastard son, delivered to the Genoese, and died in a wretched Genoese dungeon; and with his downfall passed away the Pisan sovereignty.

A period of anarchy followed the death of Della Rocca. The barons were unmerciful in their extortions, and the people were reduced to extreme misery. After many years appeared another valiant patriot of the Rocca race, Arrigo della Rocca (1392). He raised the standard of revolt, and the people rallied to him. He beat the Genoese, was proclaimed Count of Corsica, and ruled the land for four years. Defeated at length by the Genoese, he went to Spain to ask aid. Returning with a small force, he routed his enemies and became again master of the island. Genoa sent another army, Arrigo della Rocca was poisoned (1401), and in the same year Genoa submitted to France.

Corsica kept up the struggle for independence. Vincentello, nephew of Arrigo della Rocca, was made Count of Corsica, and for two years maintained a gallant contest. Genoa poured in more troops, and the resistance was crushed. Vincentello left the island. Soon returning with help from Aragon, he reconquered the county with the exception of the strongholds of Calvi and Bonifaccio. Inspired by the success of Vincentello, the young king of Aragon, Alfonso, came in person with large forces to complete the conquest. Calvi was taken, but Bonifaccio resisted all efforts. The place was strongly Genoese, and for months the endurance of its defenders was desperately heroic. Women and children and priests joined with those who manned the walls, and all fought together. Spanish courage was balked, Spanish pride humbled, and Alfonso sailed away. Vincentello, bereft of allies, lost ground. He gave his own cause a death-blow by abusing a girl whose kinsmen rose to avenge the wrong. The guilty man and indomitable patriot determined to seek aid once more in Spain; but Genoa captured him at sea, and struck off his head on the steps of her ducal palace (1434).

Then came anarchy in Corsica again. The barons fought, the peasants suffered. Law was dead. Only the dreaded vendetta ruled—the law of private vengeance. So harried were the people by continued feuds, rival contentions, and miscellaneous tumult, that they met in general assembly and decided to put themselves under the protection of the bank of St. George of Genoa. The bank agreed to receive this singular deposit (1453). The Corsican nobles resisted the bank, and terrible scenes followed. Many a proud baron had his head struck off, many of them left the country. Aragon favored the nobles, and they came back to renew the fight, defeat the forces of the bank, and reconquer most of the island.

In 1464 Francesco Sforza of Milan took Genoa, and claimed Corsica as a part of his conquest. The islanders preferred Milan to Genoa, and but for an accidental brawl, peaceful terms might have been arranged. But the brawl occurred, and there was no peace. Years of war, rapine, and universal wretchedness followed. Out of the murk appears a valiant figure, Giampolo, taking up with marvellous tenacity and fortitude the old fight of Corsica against oppression. After every defeat, he rose to fight again. He never left the field till Corsican rivalry weakened and ruined him. Then, defiant to the last, he went the way of the outlaw to die in exile.

Renuccio della Rocca’s defection had caused Giampolo to fail. After a while Rocca himself led the revolt against Genoa, and was overthrown. He left the island, but came again, and yet again, to renew the hopeless combat. Finally his own peasants killed him to put an end to the miserable war, there being no other method of turning the indomitable man (1511).

Resistance over, the bank of Genoa governed the island. The barons were broken, their castles fell to ruin. The common people kept up their local home-rule, enjoyed a share in the government, and were in a position much better than that of the common people in other parts of Europe. But the bank was not satisfied to let matters rest there; a harsh spirit soon became apparent; and the privileges which the people had enjoyed were suppressed.

Against this tyranny rose now the strongest leader the Corsicans had yet found, Sampiero. Humbly born, this man had in his youth sought adventures in foreign lands. He had served the House of Medici, and in Florence became known for the loftiness and energy of his character. Afterward he served King Francis I., of France, by whom he was made colonel of the Corsican regiment which he had formed. Bayard was his friend, and Charles of Bourbon said of him, “In the day of battle the Corsican colonel is worth ten thousand men”; just as another great warrior, Archduke Charles of Austria, said of another great Corsican, serving then in France (1814), “Napoleon himself is equal to one hundred thousand men.”

In 1547 Sampiero went back to Corsica to select a wife. So well established was his renown that he was given the only daughter of the Lord of Ornano, the beautiful Vannina. The bank of Genoa, alarmed by the presence of such a man in the island, threw him into prison. His father-in-law, Francesco Ornano, secured his release.