ERDMANN, CHRISTIAN FRIEDRICH DAVID: German Protestant; b. at Güstebiese, near Königsberg, July 28, 1821; d. at Dresden Mar. 11, 1905. He studied in Berlin (1843-1847), and in 1853 became privat-docent in theology there. In 1856 he went to Königsberg as professor of theology, and in 1864, to Breslau as general superintendent for Silesia, being at the same time honorary professor at the University of Breslau. He retired from active life in 1900. He wrote Leben und Leiden der ersten Christen (Berlin, 1854); Prima Joannis epistolæ argumentum, nexus et consilium (1855); Die Reformation und ihre Märtyrer in Italien (1855); (1881); Luther und die Hohenzollern (Breslau (1883); and Luther und seine Beziehungen zu Schlesien, insbesondere zu Breslau (Halle, 1887). He likewise contributed the section on the books of Samuel to J. P. Lange's Theologisch-homiletisches Bibelwerk (Bielefeld, 1873; Eng. transl. by C. H. Toy and J. A. Broadus, New York, 1877).