KLOPP, ONNO (1822-1903), German historian, was born at Leer on the gth of October 1822, and was educated at the universities of Bonn, Berlin and Gottingen. For a few years he was a teacher at Leer and at Osnabruck; but in 1858 he settled at Hanover, where he became intimate with King George V., who made him his Archivrat. Thoroughly disliking Prussia, he was in hearty accord with George in resisting her aggressive policy; and after the annexation of Hanover in 1866 he accompanied the exiled king to Hietzing. He became a Roman Catholic in 1874. He died at Penzing, near Vienna, on the gth of August 1903. Klopp is best known as the author of Der Fall des Hauses Stuart (Vienna, 1875-1888), the fullest existing account of the later Stuarts.
His Der Konig Friedrich II. und seine Politik (Schaffhausen, 1867) and Geschichte Ostfrieslands (Hanover, 1854-1858) show his dislike of Prussia. His other works include Der dreissigjdhrige Krieg bis zum Tode Gustaii Adolfs (Paderborn, 1891-1896); a revised edition of his Tilly im dreissigjdhrigen Kriege (Stuttgart, 1861); a life of George V., Konig Georg V. (Hanover, 1878); Phillipp Melanchlhon (Berlin, 1897). He edited Corrispondenza epistolare tra Leopoldo I. imperatore ed il P. Marco VAviano capuccino (Gratz, 1888). Klopp also wrote much in defence of George V. and his claim to Hanover, including the Offizieller Bericht uber die Kriegsereignisse zwischen Hannover und Preussen im Juni 1866 (Vienna, 1867), and he edited the works of Leibnitz in eleven volumes (1861-1884).
See W. Klopp, Onno Klopp: ein Lebenslauf (Wehberg, 1907).
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)