"Otto Hirschfeld (March 16, 1843 – March 27, 1922) was a German epigraphist and professor of ancient history who was a native of Königsberg.
In 1863 received his doctorate from the University of Königsberg, and in 1869 became a professor at the University of Göttingen. In 1872 he became a professor of classical studies at the University of Prague, and in 1876 a professor of epigraphy and ancient history at the University of Vienna. In 1885 he succeeded Theodor Mommsen (1817-1903) as professor of ancient history at the University of Berlin, where he remained until his retirement in 1917.
" - (en.wikipedia.org 13.03.2021)