In the Phanariotes epoch (1711-1821), the Greek Phanariotes dominated the political system of the Romanian Principalities; the reign institution was extremely unstable, showing high mobility for changing or switching rulers on the throne of Moldova or of Wallachia. There were 32 periods of reign, which succeeded for a generally quite short term (one or two years), of the representatives of 11 major family clans in Constantinople: Callimachi, Caragea, Hangerli, Ghica, Mavrocordat, Mavrogheni, Moruzi, Racoviţă, Ruset (Rosetti), Suţu, Ypsilanti. Romanian Principalities under Phanariotes rules (humble slaves of the Sultan in Istanbul, but powerful sovereigns in Wallachia and Moldova) will became, in the late XVIIIth century – beginning of the XIXth century – during a fascinating epoch, which prepared the transition to Romanian modernity – subjects of territorial dispute and buffer-states between the great neighboring powers. And the destiny, as well as the political career of important Phanariotes rulers (Alexander and Constantine Ypsilanti, Manole Giani Rosetti, Alexander II Mavrocordat, etc.), which were involved in the Russo-Austrian-Ottoman politico-military disputes, has ended, finally, with their emigration to the Russian or the Habsburg Empire.