Ole married Sigrid HAAVERSEN on 8 Jan 1876 in Ft. Howard, WI, USA. Sigrid (daughter of Pål Håvardsen BØ and Sigrid Knutsdatter HERMUNDSTAD) was born on 17 May 1856 in USA; and died. [Group Sheet] [Family Chart]

1. Paul Nicolai NILSEN was born on 9 Nov 1876 in Ft. Howard, WI, USA; and died.
2. Ole NILSEN was born on 18 Aug 1879 in Franklin, WI., USA; and died.
3. Sophie Carine NILSEN was born on 19 Mar 1885 in USA; and died.
4. Mathilda Lovise NILSEN was born on 15 Oct 1887 in Sandy Bay, WI. USA.
5. Stella Bertina NILSEN was born on 2 Jan 1890 in USA.
6. Ales Tonetta NILSEN was born on 1 Feb 1892 in USA.
7. Clarence Oliver NILSEN was born on 1 Aug 1894 in USA.
8. Oscar Sigvart NILSEN was born on 17 Nov 1896 in USA.
9. Lester Melvin NILSEN was born on 8 Jan 1900 in USA.