What was Johann Ernst Plamann's pupil, the future German chancellor, Duke of?
Johann Ernst Plamann Johann Ernst Plamann (22 June 1771, Repzin3 September 1834, Berlin) was a German child educator. He based his work on the ideas of Johann Heinrich Pestalozzi and Friedrich Ludwig Jahn. Among his pupils was future German chancellor Otto von Bismarck.
Johann Adolf of Saxe-Gotha-Altenburg Johann Adolf of Saxe-Gotha-Altenburg (18 May 1721, Gotha – 29 April 1799, Friedrichstanneck, now a district of Eisenberg, Thuringia), was a German prince of the House of Saxe-Gotha-Altenburg and a Saxon lieutenant general.