Title: Prince Paul of Yugoslavia
Content:  Prince Paul of Yugoslavia, also known as Paul Karađorđević (Pavle Karađorđević, Павле Карађорђевић, English transliteration: Paul Karageorgevich; 27 April 1893 – 14 September 1976), was prince regent of the Kingdom of Yugoslavia during the minority of King Peter II. Paul was a first cousin of Peter's father Alexander I.
Title: Prince Paul of Yugoslavia
Content:  14 September 1976, aged 83 and was buried at the Bois-de-Vaux Cemetery in Switzerland. Princess Elizabeth, his only daughter, obtained information from the British Special Operations Executive files in the Foreign Office in London and published them in Belgrade, in the 1990 edition of the Serbian-language biography of her father. The original book Paul of Yugoslavia: Britain's Maligned Friend was written by Neil Balfour, the first was published by Eaglet Publishing in London in 1980. Prince Paul was rehabilitated by the Serbian courts in 2011 and on 6 October 2012 was reburied at the family crypt of Oplenac, near Topola in central Serbia, together with his wife Olga and son Nikola. Prince Paul was the father of Princess Elizabeth, Prince Alexander, and Prince Nikola, and was the grandfather of the American author Christina Oxenberg and American actress Catherine Oxenberg.
Title: Prince Paul of Yugoslavia
Content:  Prince Paul of Yugoslavia was the only son of Prince Arsen of Serbia, younger brother of King Peter I, and of Princess and Countess Aurora Pavlovna Demidova, a granddaughter on one side of the Finnish philanthropist Aurora Karamzin and her Russian husband Prince and Count Pavel Nikolaievich Demidov and on the other of the Russian Prince Peter Troubetzkoy and his wife Elisabeth Esperovna, by birth a Princess Belosselsky-Belozersky. Paul was educated at Christ Church, Oxford, where he was a member of the exclusive Bullingdon Club – a dining club notorious for its wealthy members, grand banquets and boisterous rituals. Cultivated like 
Title: Prince Alexander of Yugoslavia (1924–2016)
Content:  Prince Alexander of Yugoslavia (Александар П. Карађорђевић / Aleksandar P. Karađorđević; 13 August 1924 – 12 May 2016) was the elder son of Prince Paul, who served as Regent of Yugoslavia in the 1930s, and his wife, Princess Olga of Greece and Denmark.
Title: Princess Olga of Greece and Denmark
Content:  Princess Olga of Greece and Denmark (Όλγα; 11 June 1903 – 16 October 1997) was a Greek princess who became princess of Yugoslavia as the wife of Prince Paul, Regent of the Kingdom of Yugoslavia. Princess Olga was a daughter of Prince Nicholas of Greece and Denmark and Grand Duchess Elena Vladimirovna of Russia, and a granddaughter of King George I of Greece. After a brief engagement in 1922 to Crown Prince Frederick of Denmark, she married Prince Paul of Yugoslavia in 1923. In 1934, after the assassination of King Alexander I, Prince Paul was appointed regent of Yugoslavia on behalf of King Peter II, and Princess Olga became the senior lady of the court and acted as first lady of Yugoslavia, working side by side with her husband on representation duties. In 1941, during the Second World War, 
Title: Prince Paul of Yugoslavia
Content:   On 9 October 1934 Vlado Chernozemski assassinated Paul's first-cousin, King Alexander I of Yugoslavia, in Marseille in France, and Prince Paul took the regency, as Alexander had stipulated in his Will that on his death a council of regents chaired by Paul should govern until Alexander's son Peter II came of age. Prince Paul, far more than Alexander, was Yugoslav rather than Serb in outlook, and unlike Alexander, he was inclined much more toward democracy. In its broadest outline, his domestic policy worked to eliminate the heritage of the Alexandrine dictatorship's centralism, censorship, and military control, and to pacify the 
Title: Princess Elizabeth of Yugoslavia
Content:  Princess Elizabeth was born in the White Palace, Belgrade as the third child and the only daughter of Prince Paul of Yugoslavia (prince regent of Yugoslavia 1934–1941) and Princess Olga of Greece and Denmark. Her older brothers were Prince Nicholas and Prince Alexander of Yugoslavia, who married, firstly, Princess Maria Pia of Savoy and, secondly, Princess Barbara of Liechtenstein. She is a paternal second cousin of Queen Sofía of Spain and Charles, Prince of Wales, and a maternal first cousin of Prince Edward, Duke of Kent and his siblings, Prince Michael of Kent and Princess Alexandra, The Honourable Lady Ogilvy. She is also a maternal third cousin of king Willem-Alexander of the Netherlands. She is a great-great-granddaughter of Karađorđe, who started the first Serbian uprising against the Turks in 1804. Her godmother and namesake was her maternal aunt Princess Elizabeth of Greece and Denmark. A businesswoman and writer, she is the author of four storybooks for children and she has created two perfumes- "Jelisaveta" and "E". Permanently settled in Belgrade, she lived in Villa "Montenegrina", which was owned by her mother, Princess Olga, the wife of Prince Regent Paul. The Villa has been recently sold off by the Princess.
Title: Prince Alexander of Yugoslavia (1924–2016)
Content: Prince Dimitri of Yugoslavia (18 June 1958) ; Prince Michael of Yugoslavia (18 June 1958) Prince Sergius "Serge" Wladimir Emanuel Maria of Yugoslavia (born 12 March 1963); married Sophia de Toledo on 6 November 1985. They divorced in 1986. He was remarried to Eleonora Rajneri on 18 September 2004. He has a child, with Christiane Galeotti, born in 2018. ; Princess Helene Olga Lydia Tamara Maria of Yugoslavia (born 12 March 1963); married Thierry Gaubert on 12 January 1988. The couple divorced and she remarried to Stanislas Fougeron on 12 March 2018. Prince Dušan Paul of Yugoslavia (born 25 September 1977), married in 
Title: Alexander Karađorđević, Prince of Serbia
Content:  (born & died 1850) ; Đorđe (11 October 1856 – 5 Jan 1889) ; Arsenije (16 April 1859 – 1938), married in 1892, a Russian noblewoman, Princess and Countess Aurora Pavlovna Demidova. They were the parents of Prince Paul of Yugoslavia. The youngest son of Karageorge Petrović and Jelena Jovanović was born in Topola on 11 October 1806. He was educated in Khotin, Bessarabia (Russia), under the patronage of the Russian Tsar. On 1 June 1830 in Hotin, Bessarabia, he married Persida Nenadović (15 February 1813 – 29 March 1873), daughter of Voivode Jevrem Nenadović (1793–1867) and Jovanka Milovanović (1792–1880). They had ten children:  After the Sultan’s decree acknowledging the title of Prince Mihailo Obrenović at the end of 1839, the family returned to Serbia. Alexander joined the Headquarters of the Serbian Army, and was promoted to the rank of Lieutenant and appointed as adjutant to Prince Mihailo.
Title: Prince Paul of Yugoslavia
Content:  why Alexander had chosen him in his will to serve as a regent, knowing he would never try to seize the throne from his son), and throughout his regency he gave the impression that ruling Yugoslavia was a burden to him. A French diplomat described Paul as a man whose "incontestable qualities of character, balance, and taste...Oxonian dilettantism and charm which he exercised on his visitors were useless in the present circumstances and in a country where arguments of might are the only ones which count". Married to a Greek princess and intensely Anglophile and Hellenophile, Paul distrusted Fascist Italy 

Question: Who is the mother of Prince Paul of Yugoslavia?
Answer: Aurora Pavlovna Demidova.
Princess and Countess Aurora Pavlovna Demidova.
Aurora Pavlovna Demidoff, Principessa di San Donato.
Princess Aurora Pavlovna Demidova di San Donato.