Today is the seventieth anniversary of a referendum in Greece which overwhelmingly called for King George II to come home and take the throne again. He was not long to enjoy his restoration, dying suddenly of a heart attack in April 1947. The monarchy was abolished again as a result of another referendum in 1973. There is more about the Greek royal family here.
I see from a wikipedia entry that the Greek monarchy was a London creation. "In May 1832, British Foreign Secretary Palmerston convened with French and Russian diplomats, and, without consultation of the Greeks, decided that Greece should be a monarchy."