Jakob married Katharina Wegmann on 10 Oct 1865 in Winona County, Minnesota, USA. Katharina (daughter of Joseph Wegmann and Anna Maria Mandery) was born on 16 Aug 1848 in Waldrohrbach, Pfalz, Bayern; was christened on 17 Aug 1848 in Waldrohrbach, Pfalz, Bayern; died on 12 Aug 1917 in Saint Charles, Winona County, Minnesota, USA; was buried in Calvary Cemetery, Saint Charles, Winona County, Minnesota, USA. [Group Sheet] [Family Chart]

1. Mary Anna Wiedemann was born on 9 Apr 1867 in Saint Charles, Winona County, Minnesota, USA; died on 27 Jun 1946 in Minnesota, USA.
2. Henry Wiedemann was born on 10 Jan 1870 in Saint Charles, Winona County, Minnesota, USA; died on 14 Mar 1925 in Saint Charles, Winona County, Minnesota, USA.
3. Margaret Magdalene Wiedemann was born on 2 Feb 1872 in Saint Charles, Winona County, Minnesota, USA.
4. Gertrude Rose Wiedemann was born on 30 Jan 1877 in Saint Charles, Winona County, Minnesota, USA; died on 18 Mar 1943 in Minnesota, USA.
5. Katherine Helen Wiedemann was born on 8 May 1879 in Saint Charles, Winona County, Minnesota, USA; died on 15 May 1925 in Minnesota, USA.
6. Joseph Frederick Wiedemann was born on 4 Jul 1882 in Saint Charles, Winona County, Minnesota, USA; died on 2 Sep 1882 in Saint Charles, Winona County, Minnesota, USA.
7. Joseph William Wiedemann was born on 12 Mar 1884 in Saint Charles, Winona County, Minnesota, USA; died on 12 Nov 1945 in Montana, USA.
8. Clarence Nicholas Wiedemann was born on 26 Mar 1890 in Saint Charles, Winona County, Minnesota, USA; died on 19 Jun 1957 in Minnesota, USA.