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
Sazan Island of Vlorë, in the eastern Strait of Otranto separating Italy from Albania. It is also located at the informal junction line of the Adriatic and Ionian Sea inside the Mediterranean Sea, which is just to the south according to international scientific bodies. The island is composed of limestone rocks, which was formed during the Cretaceous period, while the eastern part is partially composed of terrigenic and cleistogenic deposits. It has four peaks, the highest standing at above sea level followed by two peaks in the center and , and the lowest with in the south of the island. Sazan has