Constantine II

(born June 2, 1940, Psikhikó, near Athens, Greece) King of Greece (1964–74). Son of Paul I (1901–64), he succeeded his father in 1964. After a military coup in 1967, he and his family fled to Rome. The military regime appointed a regent in his place and granted him a free return if he wished. In 1973 the military regime proclaimed a republic and abolished the monarchy. In 1974 a civilian referendum officially ended the monarchy.

Source: Encyclopedia Britannica