History of Corsica various Italian republics that arose began to assume responsibility for the security and prosperity of Corsica, starting with Tuscany, the closest. Corsica was finally removed from the fighting by annexation to the Papal States in 1217. Pisa retained control of the island during most of the Middle Ages but at the start of the Renaissance it fell to Genoa in 1284, following the battle of Meloria against Pisa. Corsica successively was part of the Republic of Genoa for five centuries. Despite take-overs by Aragon between 1296–1434 and France between 1553–1559, Corsica would remain under Genoese control until the Corsican Republic
Roman Catholic Diocese of Mariana in Corsica greatly compromised. In 1453 Pope Nicholas V entered into a verbal agreement with the Republic of Genoa, which specified that, although the Pope maintained the exclusive right to appoint bishops on the Island of Corsica, he would appoint only Genoese subjects who were acceptable to the Government. The Genoese government turned the island over to the administration of the Genoese Banco di S. Giorgio, under new statutes for Corsica were issued, the "Capitula Corsorum", which specified that bishops on the island had to be natives of the island. In 1464, however, the Republic of Genoa came under the domination of