Thomas married Katharina Stoffel on 27 Nov 1849 in Vorderweidenthal, Pfalz, Bayern. Katharina (daughter of Johannes Jakob Stoffel and Maria Katharina Acker) was born on 27 Jul 1827 in Vorderweidenthal, Pfalz, Bayern; was christened on 29 Jul 1827 in Vorderweidenthal, Pfalz, Bayern. [Group Sheet] [Family Chart]

1. Elisabetha Helfer was born on 16 May 1850 in Vorderweidenthal, Pfalz, Bayern; was christened on 16 May 1850 in Vorderweidenthal, Pfalz, Bayern.
2. Jakob Helfer was born on 18 Oct 1852 in Vorderweidenthal, Pfalz, Bayern; was christened on 18 Oct 1852 in Vorderweidenthal, Pfalz, Bayern.
3. Johannes Helfer was born on 28 Nov 1854 in Vorderweidenthal, Pfalz, Bayern; was christened on 28 Nov 1854 in Vorderweidenthal, Pfalz, Bayern.
4. Thomas Helfer was born on 24 Mar 1857 in Vorderweidenthal, Pfalz, Bayern; was christened on 24 Mar 1857 in Vorderweidenthal, Pfalz, Bayern.
5. Markus Helfer was born on 22 Mar 1860 in Vorderweidenthal, Pfalz, Bayern; was christened on 22 Mar 1860 in Vorderweidenthal, Pfalz, Bayern.
6. Anna Maria Helfer was born on 2 Jun 1862 in Vorderweidenthal, Pfalz, Bayern; was christened on 2 Jun 1862 in Vorderweidenthal, Pfalz, Bayern.
7. Katharina Helfer was born on 6 Dec 1864 in Vorderweidenthal, Pfalz, Bayern; was christened on 6 Dec 1864 in Vorderweidenthal, Pfalz, Bayern.
8. Louise Helfer was born on 20 Dec 1866 in Vorderweidenthal, Pfalz, Bayern; was christened on 20 Dec 1866 in Vorderweidenthal, Pfalz, Bayern.
9. Heinrich Helfer was born on 30 Mar 1869 in Vorderweidenthal, Landkreis Südliche Weinstraße, Rheinland-Pfalz; died on 10 Jan 1870 in Vorderweidenthal, Landkreis Südliche Weinstraße, Rheinland-Pfalz.