The Hetairiai of Wallachia and Greece had done the same work which the Carbonari had accomplished in Spain and Italy; and on April 4, 1821, the Greeks suddenly rose at Patras and massacred the whole Turkish population. In three months the southern part of Greece was free; and by January, 1822, a Provisional Government had been formed, with Alexander Mavrocordatos at its head. Religious feeling, classical sentiment, and the loathing of the barbarous rule of the Turks combined to rouse in Europe an amount of sympathy which Metternich could not afford to disregard. He admitted the right of Alexander of Russia to sympathise with the Greeks, both on the ground of Christian sentiment and on the pretext of rights granted by previous treaties with Turkey; and he even intervened diplomatically to secure concessions from the Porte to its Christian subjects. But, though he felt the danger of the precedent which even this amount of concession to the revolutionary spirit would cause, Metternich yet believed that, by timely compromise and judicious diplomacy, he could bring back Alexander to sounder principles. The influence of Capo d'Istria was indeed an antagonistic power in the Court of St. Petersburg; but, on the other hand, Tatischeff, the rival minister at the Russian Court, seems to have been a mere tool of Metternich, and could be used effectively for the interests of Austria. So successfully did this diplomacy work, in Metternich's opinion, that on May 31, 1822, he writes exultingly in his memoirs, that he has "broken the work of Peter the Great, strengthened the Porte against Russia, and substituted Austrian and English influence for Russian in Eastern Europe." So he wrote in May; in August of the same year "that upright and enlightened statesman," Lord Londonderry, committed suicide. Then George Canning became Minister for Foreign Affairs, and hastened to cut the knot which linked the interests of Austria with those of England. The change in England's policy soon became evident. No doubt the feeling of dislike to Metternich had been gradually growing in that country. Its representatives had held aloof even from the Congress of Laybach; and when, in 1822, the Powers met again at Verona to encourage the French Cabinet in their attempt to restore Ferdinand of Spain, England entered a decided protest against the proceedings of the Congress. Nor did the protest remain a barren one. The invasion of Spain by the French was followed by the recognition of the independence of the Spanish colonies by England; and when the absolutist movement threatened to spread to Portugal, Canning despatched troops to protect the freedom and independence of that country.