Onno Klopp

Thoroughly disliking Prussia, he was in hearty accord with George in resisting the empire's aggressive policy.

und seine Politik (Schaffhausen 1867) and Geschichte Ostfrieslands (Hanover, 1854–1858) show his dislike of Prussia.

His other works include Der dreissigjährige Krieg bis zum Tode Gustav Adolfs (Paderborn, 1891–1896); a revised edition of his Tilly im Dreißigjährigen Krieg (Stuttgart, 1861); a life of George V, König Georg V. (Hanover, 1878); Das Jahr 1683 (1882); and Phillipp Melanchthon (Berlin, 1897).

He edited Corrispondenza epistolare tra Leopoldo I. imperatore ed il P. Marco d'Aviano cappuccino (Gratz, 1888).

Klopp also wrote much in defence of George V and his claim to Hanover, including the Offizieller Bericht über die Kriegsereignisse zwischen Hanover und Preussen im Juni 1866 (Vienna, 1867), and he edited the works of Leibniz in eleven volumes.