Marija Jelizaveta Yusupova (born 1 January 1932 in Belgrade, Serbia) russian aristocrat, socialite Her full name is Princess Marija Jelizaveta Felixovna Youssoupova-Karadjordjevic, Princess of Serbia, Countess Sumarokov-Elston. She was born in Belgrade, Serbia. Her mother was Princess Ileana of Serbia, and the father was Prince Felix Felixovich Yusupov, only son of Prince Felix Yusupov and Princess Irina Alexandrovna of Russia. Marija in her birth last the Countess Sumarokov-Elston title, and the Her Serene Highness style. Titles and styles * HH Princess Youssoupov * HRH Princess of Serbia * The Honourable Countess Haugwitz-Hardenberg-Rewentlow * The Honourable Madame Belge * HH Princess Mdvani * The Honourable Lady Cunningham-Reid * The Honourable Countess Daun * HSH Countess Sumarokov-Elston