Information: - Princess Elisabeth of Greece and Denmark ( Greek : ) ( 24 May 1904 -- 11 January 1955 ) was the middle daughter of Prince Nicholas of Greece and Grand Duchess Elena Vladimirovna of Russia . - Prince Nicholas of Greece and Denmark (22 January 1872 8 February 1938), of the Glucksburg branch of the House of Oldenburg, was the fourth child and third son of George I, King of the Hellenes, and of Queen Olga. He was known as "Greek Nicky" in the family to distinguish him from his paternal first cousin Emperor Nicholas II of Russia. Prince Nicholas was a talented painter, often signing his works as "Nicolas Leprince." - Grand Duke Vladimir Alexandrovich of Russia (" ") ) (22 April 1847 17 February 1909) was a son of Emperor Alexander II of Russia, a brother of Tsar Alexander III of Russia and the senior Grand Duke of the House of Romanov during the reign of his nephew, Tsar Nicholas II. - Duchess Marie of Mecklenburg-Schwerin (later Grand Duchess Maria Pavlovna of Russia, known as "Miechen" or "Maria Pavlovna the Elder"; 14 May 1854 6 September 1920) was born Marie Alexandrine Elisabeth Eleonore of Mecklenburg-Schwerin, daughter of Grand Duke Frederick Francis II of Mecklenburg-Schwerin and Princess Augusta of Reuss-Kostritz. A prominent hostess in St Petersburg following her marriage to the Grand Duke Vladimir Alexandrovich of Russia, she was known as the "grandest of the grand duchesses" and had an open rivalry with the Empress Maria Feodorovna. - Grand Duchess Elena Vladimirovna of Russia (17 January 1882 13 March 1957), sometimes known as Helen, Helena, Helene, Ellen, Yelena, Helene, or Eleni, was a Russian grand duchess as the only daughter and youngest child of Grand Duke Vladimir Alexandrovich of Russia and Duchess Marie of Mecklenburg-Schwerin. Her husband was Prince Nicholas of Greece and Denmark and paternal first cousin of Tsar Nicholas II of Russia. What object entity has the relation of 'noble family' with the subject 'princess elizabeth of greece and denmark'? Choices: - house of oldenburg - house of romanov - reuss
A:
house of oldenburg