On 17 July 1917, George appeased British nationalist feelings by issuing a royal proclamation that changed the name of the British royal house from the German-sounding House of Saxe-Coburg and Gotha to the House of Windsor. He and all his British relatives relinquished their German titles and styles, and adopted British-sounding surnames. George compensated his male relatives by creating them British peers. His cousin, Prince Louis of Battenberg, who earlier in the war had been forced to resign as First Sea Lord through anti-German feeling, became Louis Mountbatten, 1st Marquess of Milford Haven, while Queen Mary's brothers became Adolphus Cambridge, 1st Marquess of Cambridge, and Alexander Cambridge, 1st Earl of Athlone.