Ionian Islands become the British protectorate of the United States of the Ionian Islands

Background. Prior to 1815, the Ionian Islands experienced various occupations, including French control following the Treaty of Tilsit. The region had previously formed part of the Septinsular Republic. The establishment of the United States of the Ionian Islands as a British protectorate occurred after the final defeat of Napoleon, solidifying British influence in the Mediterranean.

Treaty and Establishment. The protectorate was formalized by the Treaty between Great Britain and Austria, Prussia, and Russia, signed in Paris on 5 November 1815. This treaty granted Britain a protectorate over the Ionian Islands. Article VIII ensured Austria received equal trading privileges. The settlement created a federation, distinct from the earlier Septinsular Republic.

Administrative Structure. The new state featured a bicameral legislature known as the Parliament of the United States of the Ionian Islands, consisting of a Legislative Assembly and a Senate. A High Court of Appeal, the Supreme Council of Justice, was established. Corfu served as the seat of the British Lord High Commissioner, anchoring the administrative center of the protectorate.