Johannes married Gertrud Braun on 12 Jun 1758 in Waldhambach, Pfalz, Bayern. Gertrud was born in 1733 in Waldhambach, Pfalz, Bayern; died on 18 Nov 1783 in Waldhambach, Pfalz, Bayern. [Group Sheet] [Family Chart]

1. Veronika Landherr was born on 12 Feb 1760 in Waldhambach, Pfalz; died on 16 Nov 1822 in Waldhambach, Pfalz, Bayern.
2. Katharina Landherr was born on 17 Jan 1762 in Waldhambach, Pfalz, Bayern.
3. Johannes Landherr was born on 30 Dec 1764 in Waldhambach, Pfalz, Bayern; died on 15 Feb 1813 in Waldhambach, Pfalz, Bayern.
4. Maria Magdalena Landherr was born on 19 May 1769 in Waldhambach, Pfalz, Bayern; was christened on 20 May 1769 in Waldhambach, Pfalz, Bayern; died on 23 Apr 1838 in Waldhambach, Pfalz, Bayern.