Friedrich married Maria Fröhlich on 24 Nov 1883. Maria (daughter of Georg Michael Fröhlich and Katharina Pferdsdorf) was born on 16 Jul 1860 in Hofstätten, Pfalz, Bayern; was christened on 23 Jul 1860 in Hofstätten, Pfalz, Bayern; died on 22 Nov 1945 in Hofstätten, Pfalz, Bayern. [Group Sheet] [Family Chart]

1. Anna Maria Heidinger was born on 28 Sep 1884 in Hofstätten, Pfalz, Bayern; died on 13 Sep 1969 in Trippstadt, Landkreis Kaiserslautern, Rheinland-Pfalz.
2. Martin Heidinger was born on 4 Feb 1887 in Hofstätten, Pfalz, Bayern; died in 1914.
3. Heinrich Heidinger was born on 31 Jan 1890 in Hofstätten, Pfalz, Bayern; died in 1941.
4. Friedrich Heidinger was born on 8 Sep 1892 in Hofstätten, Pfalz, Bayern; died on 29 May 1915.
5. Georg Heidinger was born on 17 Aug 1895 in Hofstätten, Pfalz, Bayern.
6. Adam Heidinger was born on 27 Mar 1898 in Hofstätten, Pfalz, Bayern; died in 1955.
7. Josephine Heidinger was born on 12 Jul 1901 in Hofstätten, Pfalz, Bayern; died on 25 Mar 1977 in Landau, Stadtkreis Landau in der Pfalz, Rheinland-Pfalz.
8. Philipp Heidinger was born on 4 Nov 1905 in Hofstätten, Pfalz, Bayern; died on 23 Oct 1976 in Klingenmünster, Landkreis Südliche Weinstraße, Rheinland-Pfalz.