In what year was the author of Heir to the Empire born?
1951
1890
1890
1890
1889
1890
1889
1890
1876
1893
1881
1889
1890
1876
1884
1861
1896
1873
1897
1893
1881
1889
1890
1876
1884
1861
1885
1874
1887
1893
1881
1889
1878
1890
1896
1873
1876
1861
1897
1884
1872
1893
1885
1881
1874
1888
1889
1890
1876
1878
1887
1896
1894
1873
1861
1897
1889
1890
1876
1884
1872
1886
1893
1885
1881
1874
1888
1889
1878
1890
1887
1896
1856
1894
1898
1873
1876
1884
1861
1897
1875
1882
1886
1893
1889
1890
1872
1871
1885
1881
1874
1888
1878
1887
1889
1890
1896
1856
1894
1898
1891
1880
1873
1892
1876
1884
1861
1897
1875
1882
1883
1886
1893
1890
1872
1871
1885
1881
1874
1888
1889
1895
1887
1878
1890
1896
1931
1856
1894
1898
1891
1880
1873
1892
1876
1884
1861
1897
1875
1882
1883
1886
1890
1872
1893
1871
1885
1881
1874
1888
1889
1887
1878
1879
1890
1895
1896
1931
1923
1856
1898
1880
1894
1891
1873
1892
1876
1865
1884
1861
1897
1890
1893.
1875
1882
1883
1872
1886
1893
1862
1871
1870
1885
1905
1890.
1921
1881
1874
1888
1889
1890
1895
1887
1896.
1878
1879
1896
1876.
1931
1899
1923