Martin married Katharina Kuntz on 7 Jul 1885. Katharina (daughter of Joseph Kunz and Margaretha Guckert) was born on 24 Oct 1860 in Steinfeld, Pfalz, Bayern. [Group Sheet] [Family Chart]

1. Johannes Theodor Alt
2. Oskar Alt was born on 17 Nov 1886 in Steinfeld, Pfalz, Bayern.
3. Ludwina Alt
4. Magdalene Alt
5. Katharina Alt
6. Emil Alt was born on 3 Oct 1891 in Kapsweyer, Pfalz, Bayern.
7. Ludwina Alt
8. August Alt
9. Elisabeth Alt was born on 10 Sep 1902 in Kapsweyer, Pfalz, Bayern; died in 2002; was buried in Friedhof Steinfeld, Steinfeld, Landkreis Südliche Weinstraße, Rheinland-Pfalz.

Johannes married Barbara Tisch. [Group Sheet] [Family Chart]