Venetian rule in the Ionian Islands to south, including their Greek and Italian names in parentheses: Cythera and Lefkada were additionally called ' or ' and " respectively by the Ottomans. During the Roman Empire, the Ionian Islands were variously part of the provinces of Achaea and Epirus vetus. These would form, with the exception of Cythera, the Byzantine theme of Cephallenia in the late 8th century. From the late 11th century, the Ionian Islands became a battleground in the Byzantine–Norman Wars. The island of Corfu was held by the Normans in 1081–1085 and 1147–1149, while the Venetians unsuccessfully besieged it in 1122–1123. The island of
Venetian rule in the Ionian Islands of the Republic is deeply rooted in the population, who recall it with a shade of nostalgia even after so much time and so many events. Because of the long Venetian period, the manners and traditions of the inhabitants of the Ionian Islands are a mixture of Greek and Italian. The Venetian influence is illustrated in all aspects of culture and everyday life. In 1800 the Septinsular Republic was established; its flag design was based on the flag of the Republic of Venice. In addition, Italian was the co-official language of both the Septinsular Republic and the United States of