Kari married Wilhelm Herman Mattern on 19 Mar 1858 in Jevnaker, Oppland, Norway. Wilhelm (son of Ernst Mattern) was born in 1834 in Eisleben, Germany; died on 4 Jan 1895 in Bryant, Hamlin County, South Dakota, USA; was buried in Bryant, Hamlin County, South Dakota, USA. [Group Sheet] [Family Chart]

1. Ole Olaf Mattern was born on 2 Dec 1860 in Oppland, Norway; died on 22 Oct 1941 in Kenmare, Ward County, North Dakota, USA; was buried in Kenmare, Ward County, North Dakota, USA.
2. Edward Mattern was born on 2 Sep 1862 in Oppland, Norway; died on 10 Aug 1944 in Ambrose, Divide County, North Dakota, USA; was buried in Norma, Renville County, North Dakota, USA.
3. Conrad Mattern was born on 10 Mar 1866 in Oppland, Norway.
4. Fredrik Vilhelm Mattern was born on 15 Jul 1873.
5. Hermanna Mathilde Mattern was born on 22 Jul 1879.
6. Henry Mattern was born about Mar 1885 in South Dakota, USA.