Johann married Johanna Concordia Rosentreter on 31 Aug 1873 (Protestant) in Wieleń, Czarnków-Trzcianka County, Greater Poland Voivodeship, Poland. Johanna (daughter of Carl August Rosentreter and Maria Elizabeth Hoffmann) was born on 12 Feb 1845 in Chodzież, Chodzież County, Greater Poland Voivodeship, Poland; was christened/baptised on 16 Feb 1845 in Chodzież, Chodzież County, Greater Poland Voivodeship, Poland; died on 7 Nov 1937 in Duisburg, North Rhine-Westphalia, Germany. [Group Sheet] [Family Chart]