German historian; born at Berlin Nov. 5, 1816; died at Paris Sept. 11, 1860; cousin of Theodor Hirsch. From 1833 to 1836 he studied history at the universities of Berlin and Königsberg. In 1834 he published a prize essay, "Das Leben und die Thaten König Heinrichs I."; and in 1837, conjointly with Waitz, "Die Echtheit der Chronik von Korvei." His first important work was "De Vita et Scriptis Sigiberti," Berlin, 1841. In 1842 he became privat-docent at the University of Berlin, two years later receiving the appointment of assistant professor. Like Stahl, another converted Jew, Hirsch took an active interest in the purification of the Church, and in this connection became a frequent contributor to the "Kreuzzeitung." His principal work, the "Geschichte Heinrich II.," was unfinished at his death. It was published by Usinger, Pabst, and Bresslau in the "Jahrbücher des Deutschen Reiches" (Berlin and Leipsic, 1862-75, 3 vols.).
- Meyers Konversations-Lexikon, 1897;
- Allgemeine Deutsche Biographie;
- De le Roi, Juden-Mission, Index.