The global war effectively ended much of the political power of Europe's dynasties. The naval career of her father, Prince Louis of Battenberg, had collapsed at the beginning of the war in the face of anti-German sentiment in Britain. At the request of King George V, he relinquished the Hessian title Prince of Battenberg and the style of Serene Highness on 14 July 1917, and anglicized the family name to Mountbatten. The following day, the King created him Marquess of Milford Haven in the peerage of the United Kingdom. The following year, two of her aunts, Empress Alexandra Feodorovna of Russia, and Grand Duchess Elizabeth Feodorovna, were murdered by Bolsheviks after the Russian revolution. At the end of the war the Russian, German and Austro-Hungarian empires had fallen, and Princess Andrew's uncle, Ernest Louis, Grand Duke of Hesse, was deposed.