Markus married Elisabetha Neuhardt on 27 Feb 1866 in Rumbach, Pfalz, Bayern. Elisabetha (daughter of Johannes Georg Jakob Neuhardt and Eva Katharine Retzer) was born on 26 Sep 1841 in Rumbach, Pfalz, Bayern. [Group Sheet] [Family Chart]

1. Georg Helfer was born on 22 Jan 1867 in Vorderweidenthal, Pfalz, Bayern; was christened on 27 Jan 1867 in Vorderweidenthal, Pfalz, Bayern.
2. Karolina Helfer was born on 12 Apr 1868 in Vorderweidenthal, Pfalz, Bayern; was christened on 12 Apr 1868 in Vorderweidenthal, Pfalz, Bayern.
3. Katharina Helfer was born on 9 Feb 1873 in Vorderweidenthal, Pfalz, Bayern.