Othonoi Othonoi Othonoi (, also rendered as Othoni) is a small Greek island in the Ionian Sea, located northwest of Corfu, and is the westernmost point of Greece. Othonoi is the largest of the Diapontia Islands. It is a former community of the Ionian Islands. Since the 2011 local government reform it is part of the municipality of Corfu, of which it is a municipal unit. The municipal unit has an area of 10.078 km and population of 392 (2011). In the 19th century the island was the capital of the Diapontia Islands municipality, which also included nearby islands of Ereikoussa,
United States of the Ionian Islands and Russia signed the Treaty of London, pledging the transfer of sovereignty to Greece upon ratification; this was meant to bolster the reign of the newly installed King George I of Greece. Thus, on 28 May, by proclamation of the Lord High Commissioner, the Ionian Islands were united with Greece. According to the second constitution of the republic (1803), Greek was the primary official language, in contrast to the situation in the Septinsular Republic. Italian was still in use, though, mainly for official purposes since the Venetian Republic. The only island in which Italian (Venetian) had a wider spread was