Johannes married Katharina Becker about 1778 in Dahn, Pfalz, Bayern. Katharina was born in 1757; died on 2 Apr 1831 in Dahn, Pfalz, Bayern. [Group Sheet] [Family Chart]

1. Margaretha Helfrich was born on 4 Apr 1779 in Dahn, Pfalz, Bayern; died on 4 Mar 1807 in Dahn, Pfalz, Bayern.
2. Johannes Jakob Helfrich was born on 22 Apr 1782 in Dahn, Pfalz, Bayern.
3. Johannes Adam Helfrich was born on 28 May 1785 in Dahn, Pfalz; died on 5 Jul 1852 in Dahn, Pfalz, Bayern.
4. Jakob Helfrich was born on 13 Nov 1787 in Dahn, Pfalz, Bayern.