Frederica of Hanover, Queen consort of the Hellenes (1917-1981) pictured left with her daughter Princess Irene of Greece and Denmark at an event in 1964. (Photo by Rolls Press/Popperfoto via Getty Images/Getty Images)
Frederica of Hanover, Queen consort of the Hellenes (1917-1981) pictured left with her daughter Princess Irene of Greece and Denmark at an event in 1964. (Photo by Rolls Press/Popperfoto via Getty Images/Getty Images)