Background
Her father was the second son of George I of Greece and Olga Constantinovna of Russia.
Her father was the second son of George I of Greece and Olga Constantinovna of Russia.
As a cousin of the bridegroom, she was a leading guest at the 1947 wedding of Princess Elizabeth and Philip, Duke of Edinburgh. She authored Le Tsarevitch, Enfant Martyr, a biography of Aleksey Nikolaevich, Tsarevich of Russia, written in French, which was published in 1990. Titles and styles 10 February 1910 – 30 May 1938: Her Royal Highness Princess Eugénie of Greece and Denmark 30 May 1938 – 28 November 1949: Her Royal Highness Princess Dominic Radziwiłł 28 November 1949 – 11 May 1965: Her Royal Highness The Duchess of Castel Duino 11 May 1965 – 13 February 1989: Her Royal Highness Princess Eugénie, Duchess of Castel Duino Honours.