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| 1826, April 4 |
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| St. Petersburg Protocol, signed by Britain (Wellington mission to St. Petersburg) and Russia. The two powers agreed to mediate on the basis of complete autonomy for Greece under Ottoman suzerainty. Canning, who was chiefly concerned with preventing separate action by Russia, tried hard to associate other powers. | 1 |
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| 1827, April 11 |
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| The Greek factions, whose rivalries paralyzed all plans of action, united to elect Capo d'Istria president for seven years. | 2 |
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| May 17 |
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| Constitution of Trözene, which practically deprived the executive of all power and vested it in a single chamber, the Senate. Despite the efforts of Englishmen Lord Thomas Cochrane and Sir Richard Church, united action proved illusory. | 3 |
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| June 5 |
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| The Acropolis capitulated to the Ottomans. | 4 |
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| July 6 |
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| TREATY OF LONDON. France joined Russia and Britain, and it was provided that if the Ottomans refused an armistice, the three powers would threaten to support the Greeks and use their naval forces. | 5 |
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| Aug. 16 |
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| Note of the three powers to the Porte, demanding an armistice. The Ottomans refused, whereupon the admirals were instructed to stop all reinforcements and supplies from reaching the forces in Greece. | 6 |
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| Oct. 20 |
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| BATTLE OF NAVARINO. The British, French, and Russian squadrons entered the harbor, where the large Egyptian fleet was crowded together. The battle was an artillery fight at short range and resulted in the sinking or blowing up of most of the Egyptian fleet. Wild enthusiasm flared in Europe; the indignant Ottomans demanded reparation. | 7 |
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| Dec. 28 |
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| The allied ambassadors left Constantinople. | 8 |
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