duchy William III (1852-) 1852 1880 1882 Adolf (1890-) 1895 William IV (1905-) 1907 Marie Adelaide (1912-) 1914 Charlotte (1919-) 1922 1922 1923 1935 occupation 1940 1940 liberation 1945 1945 1945 1945 ... 1946 1948 Jean (1964-) 1966 Henri (2000-) 2010 European Union 2010
