King Constantine II of Greece marries Princess Anne-Marie of Denmark in a ceremony at the Metropolitan Cathedral of Athens in Athens, Greece on 18th September 1964. (Photo by Rolls Press/Popperfoto via Getty Images/Getty Images)
King Constantine II of Greece marries Princess Anne-Marie of Denmark in a ceremony at the Metropolitan Cathedral of Athens in Athens, Greece on 18th September 1964. (Photo by Rolls Press/Popperfoto via Getty Images/Getty Images)