Restoration of the nobility In all the islands they occupied, the Russians at first installed provisional administrations of nobles and businesspeople alike. On 22 March, however, the Russian authorities invited assemblies of the nobles to undertake the governance of the Ionian Islands, thereby restoring the previous
status quo. On the next day, the Great Council of Corfu was reconstituted; its very first action was a vote of thanks to the Allied rulers, the Ottoman Sultan, the Russian Emperor, and the British King. In Zakynthos, however, the local noble council preferred to direct its thanks exclusively to the British, an expression of the strong pro-British tendency on the island, due to the close commercial links centred on the
currant trade. On , the commanders of the two fleets announced that the Ionian Islands would comprise a single state, governed by a
Senate () in Corfu city, composed of three representatives each from Corfu, Cephalonia, and Zakynthos, two from Lefkada, and one each from Ithaca, Kythira, and
Paxoi. The Venetian nobleman
Angelo Orio, the last Venetian of Argostoli, was appointed head of the Senate, and entrusted with the creation of a constitution for the new state. Orio's draft constitution comprised 28 articles and one addendum, and envisaged a thoroughly aristocratic regime, with each island headed by a Great Council composed of the nobles and the upper bourgeoisie. The Great Councils would elect the senators. Each island would retain a local administrative council of six members and a treasury, but a central treasury would exist in Corfu. The Senate was the ultimate executive authority, and its president the
head of state. A Small Council of 40 would be elected by the Great Councils of the three largest islands, and would be responsible for justice, the selection of officials, and advising on legislation. Each island's council would have to ratify the laws passed by the Senate. In addition, the use of the
Greek language was sanctioned for the first time in the courts. Ushakov also restored the
Orthodox Archbishopric of Corfu, which had been abolished in the 13th century by the
Angevin rulers of Corfu.
Treaty of Constantinople , one of the two main negotiators in Constantinople. On 21 June 1799, the Senate sent a twelve-member delegation to
Constantinople and
Saint Petersburg, drawn from the upper classes of each island, to express its gratitude to the Sultan and Tsar and secure recognition of the new state's independence. The delegates were also tasked with producing a draft constitution and submitting it for ratification, as well as press for the restoration of the Islands' maritime and land frontier with the withdrawal of Ali Pasha from Butrinto, Preveza, and Vonitsa. The delegation included Orio, nominated as ambassador to St. Petersburg, and the presidency of the Senate passed to
Count Spyridon Georgios Theotokis of the distinguished
Theotokis family, who had previously headed the Provisional Municipality under French rule. Once in Constantinople, however, the delegation quickly realized that the Porte was not interested in recognizing the Islands' independence, but rather in creating a vassal state under Ottoman suzerainty. Two of the delegates, the Corfiot Count
Antonios Maria Kapodistrias and the Zakynthian Count
Nikolaos Gradenigos Sigouros Desyllas, remained in Constantinople to conduct negotiations with the Porte, while Orio and another delegate, Kladas, were to represent the Ionian cause in Saint Petersburg. In the negotiations that followed, the Constantinople delegates were pitted against the Saint Petersburg ones in a correspondence war over the nature of the new polity. On , the
Treaty of Constantinople was concluded between Russia and the Ottomans, joined later by the British, creating the "Republic of the Seven United Islands" (; ), the first autonomous Greek state since the
fall of the Byzantine Empire in 1453. According to the provisions of the treaty, the Ionian Islands would be a single federal state, with the individual islands preserving a degree of autonomy. It would follow the long-established model of the
Republic of Ragusa, being an aristocratic republic led by the "primates and notables", and under Ottoman suzerainty, as token of which they would pay an annual tribute of 75,000
piastres to the Sultan. This was a victory for the Sultan, and a disappointment for the Islanders, who had been promised the right to choose their own form of governance in the proclamations of the
Ecumenical Patriarch of Constantinople,
Gregory V, and the head of the Russian fleet, Admiral
Fyodor Ushakov. The new state's constitution, once agreed, would be approved by the signatory powers. As the new state lacked military forces, Russian and Ottoman forces would remain to garrison its forts and guarantee its security until the end of the war against France. The mainland exclaves of Parga, Vonitsa, Preveza, and Butrinto, on the other hand, would remain under Ottoman control but would enjoy a special status similar to that of the
Danubian Principalities.
Adoption of the 'Byzantine Constitution' At the same time, without consulting their colleagues in Saint Petersburg or the provisional government in the Islands, Capodistrias and Sigouros Desyllas also composed a new constitution and designed the new flag of the state. The new 'Byzantine Constitution' (, ) was most probably named after the city in which it was composed, Constantinople (ancient
Byzantion)—although tradition derived the name from the Republic being the first free state in Greece since the
fall of Constantinople. The constitution comprised 37 articles. It envisaged an aristocratic federal republic, with a local administration on every island, headed by three
syndics, to be chosen annually from the Great Council of the nobles of each island. The syndics elected a dean () as head of administration for four-month tenures. The Senate in Corfu remained the highest authority of the federal state, composed of the representatives of the islands. Its president, the , was the head of state. The constitution was printed in Greek, with heavy use of Italian loanwords for administrative terms, by the patriarchal press in Constantinople. The new constitution was strongly reactionary, reversing the gains of the bourgeoisie in particular, in favour of the old noble families; even the titles of nobility granted in 1799, after the French left, and which were mostly given to the wealthy commercial class, were rescinded, and the legislation of the abolished Venetian Republic restored. In keeping with the reactionary ideas embodied in the constitution was also the new flag, sporting the Venetian
Lion of Saint Mark holding a bundle of seven arrows, symbolizing the islands, and a Bible; suggestions with more revolutionary overtones, such as the rising
phoenix, were rejected. On 1 November 1800, the new constitution and flag were formally sanctioned by the
Grand Vizier and blessed by the Patriarch in Constantinople. The Ionian envoys to St. Petersburg, Orio and Kladas, protested to the Tsar about the events in Constantinople, but in vain; Theotokis, who now was recognized as head of state with the title of
prince, even dismissed Orio from his position. ==Political turmoil and secessionist movements, 1800–1801==