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.
Princess Maria Amalia of Saxony Maria Amalia of Saxony (26 September 1757 – 20 April 1831) was a daughter of Frederick Christian, Elector of Saxony and his wife Maria Antonia Walpurgis of Bavaria. She became the Duchess of Zweibrücken by her 1774 marriage to Charles II August, Duke of Zweibrücken.