Georgios Papadopoulos
Georgios Papadopoulos (; ; 5 May 1919 – 27 June 1999) was the head of the military coup d'état that took place in Greece on 21 April 1967, and leader of the junta that ruled the country from 1967 to 1974. He held his dictatorial power until 1973, when he was himself overthrown by his co-conspirator Dimitrios Ioannidis.
Prime Minister of Greece
The Executive continued to govern Greece until 1828, when Ioannis Kapodistrias assumed the governance of the state as "Governor of Greece"—simultaneously head of state and of the government. Kapodistrias was assassinated in 1831 and his government, presided over by his brother Augustinos, collapsed the following year. It was replaced by a series of collective governmental councils, which lasted until 1833, when Greece became a monarchy.