Born: March 27, 1821, Zangenberg , Germany.
Died: January 24, 1892, Goslar, Germany.
Johann was the father of Hans Rudolf Ranke.
He worked as a teacher and lecturer, publishing works on early education. In 1874, he became director of the Oberlinhaus in Babelsberg.
After poor health curtailed his professional activity and writing, he retired in 1878.
If you can help with any of these items,