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 the Ionian Islands. Because of its status, Italian was also taught at schools along with Greek and English (Ionian Islands were a protectorate of the United Kingdom from 1815 until 1864). In the First Year of the secondary education, for instance, Greek was taught four times a week, Italian three times and English twice. In the Greek Census of 1907, 4,675 people from the Ionian Islands stated Catholicism as their denomination, about 1.8% of the total population (254,494), while 2,541 (1%) Ionians stated Italian as their mother tongue, making it the second language by number of speakers. The Italian language