King Constantine II of Greece and Princess Anne-Marie of Denmark pictured together during their wedding day celebrations in Athens, Greece on 18th September 1964. (Photo by Rolls Press/Popperfoto via Getty Images/Getty Images)
King Constantine II of Greece and Princess Anne-Marie of Denmark pictured together during their wedding day celebrations in Athens, Greece on 18th September 1964. (Photo by Rolls Press/Popperfoto via Getty Images/Getty Images)