1450 Nerio joins forces with Muhammed II and becomes Ottoman vassal.
1453 Infant son of Nerio succeeds on his father’s death with his mother as regent.
1455 Muhammed orders duchy conferred on Franco, nephew of Nerio II.
1456 Muhammed finding the Athenians disgusted with Franco annexes duchy to the Ottoman Empire.
There are other feudal states north of the isthmus of Corinth, ruled by the lords of Budonitza, Salona, and Negropont, but details of their history are lacking. Like Athens they are finally merged in the Ottoman Empire.
THE PRINCIPALITY OF ACHAIA (1205-1460 A.D.)
1205-1208 Guillaume de Champlitte, receiving territory in the Peloponnesus as his share of the Byzantine Empire, is joined by Geoffrey Villehardouin, nephew of the chronicler, and conquering about half the peninsula within three years organises a strong feudal government. Geoffrey is his most important feudal vassal, and receives the fief of Kalamata.
1210 Guillaume returns to France leaving his relative Hugh in charge, but the latter dying, Geoffrey is elected in his place. Geoffrey possesses himself of the principality. He strengthens it in every possible way.
1218 Geoffrey II succeeds his father.
1219-1222 Serious quarrel of Geoffrey with the pope. The ban of excommunication is finally removed.