Friedrich married Magdalena Thurn on 10 Jun 1875 in Kassel, Odessa, Ukrayina. Magdalena was born in 0Feb 1855 in Odessa, Ukrayina; died on 15 May 1957 in Hutchinson County, South Dakota, USA; was buried in Bethel Reformed Cemetery #2, Hutchinson County, South Dakota, USA. [Group Sheet] [Family Chart]

1. John F. Mehlhaff was born on 22 Nov 1878 in South Dakota, USA; died on 8 Jun 1939 in South Dakota, USA.
2. Peter F. Mehlhaff was born on 12 May 1879 in South Dakota, USA; died on 10 Mar 1927 in Tripp, Hutchinson County, South Dakota, USA; was buried in Simental Cemetery, Kaylor, Hutchinson County, South Dakota, USA.
3. Catharine Mehlhaff was born on 14 Nov 1882 in Tripp, Hutchinson County, South Dakota, USA; was christened on 10 Feb 1883 in Tripp, Hutchinson County, South Dakota, USA; died on 19 Apr 1958 in Tripp, Hutchinson County, South Dakota, USA.
4. Christina Mehlhaff was born on 21 Dec 1885 in South Dakota, USA; died on 16 Feb 1969 in Tripp, Hutchinson County, South Dakota, USA.
5. Jacob F. Mehlhaff was born on 22 Jan 1888 in Hutchinson County, South Dakota, USA; died on 15 May 1949 in Hutchinson County, South Dakota, USA.
6. Daniel F. Mehlhaff was born on 30 Sep 1892 in South Dakota, USA; died on 22 May 1964 in South Dakota, USA; was buried in Friedens Reformed Cemetery, Fair Township, Hutchinson County, South Dakota, USA.

Friedrich married Susanna Klootz on 1 Oct 1835 in Kassel, Odessa, Ukrayina. Susanna was born on 13 Aug 1813 in Württemberg; died on 6 Aug 1842 in Kassel, Odessa, Ukrayina. [Group Sheet] [Family Chart]