On 11th April 1919, less than a year after the assassination of the Romanovs, the British battleship HMS Marlborough left Yalta carrying twenty members of the Russian Imperial Family into perpetual exile. They included the Tsar's mother, the Dowager Empress Marie, and his sister, the Grand Duchess Xenia, Prince Felix Youssupov, the murderer of Rasputin and a man once mooted as a future leader of Russia, and Grand Duke Nicholas, former Commander-in-Chief of the Russian Armies.