HRH Princess Olga of Greece and Denmark, Princess of Yugoslavia (11 Jun 1903-16 Oct 1997). Former last Regent Queen of Yugoslavia. Princess Olga was born in Tatoi, the eldest daughter of Prince Nicholas of Greece and Denmark and his wife, Grand Duchess Helen Vladimirovna of Russia. Prince Nicholas was the second son of King George I of the Hellenes, the younger brother of Queen Alexandra, the consort of King Edward VII of the United Kingdom. One of her paternal uncles was Prince Andrew of Greece and Denmark, the father of Prince Philip, Duke of Edinburgh. Her mother was a granddaughter of Tsar Alexander III of Russia. Brought up in relative poverty, she married in Belgrade 22 Oct 1923 HRH Prince Paul of Yugoslavia (St.Petersburg 27 Apr 1893-Paris 14 Sep 1976), becoming the Regent and last Queen before the fall of the monarchie. After that the family was exiled to South Africa. The Prince and Princess of Yugoslavia had three many times married children: The eldest, the current Prince Alexander of Yugoslavia (married firstly with HRH Princess María Pía di Savoia, and secondly with Princess Barbara of Liechtenstein) , Princess Elizabeth (m.1st in Florida 21 May 1960 (div 1966) Howard Oxenberg (b.New York 1919); m.2d London 23 Sep 1969 (div) Neil Balfour (b.Lima 12 Aug 1934); m.3d New York 28 Feb 1987 [28 Aug 1987, per one source] Manuel Ulloa y Elias (Lima 12 Nov 1922-Madrid 9 Aug 1992) and the late Prince Nikola of Yugoslavia. She´s the grandmother of the actress Catherine Oxenberg.