Jacob married Alexandra Nikoline Smith on 20 Nov 1879 in Tvedestrand, Aust-Agder, Norway. Alexandra (daughter of Johan Frederik Smith and Eleonore Elisabeth Bech) was born on 06 Aug 1858 in Tvedestrand, Aust-Agder, Norway. [Group Sheet] [Family Chart]

1. Eleonore Prebensen was born on 08 Jun 1881 in Risør, Norway.
2. Jacob Wetlesen Prebensen was born on 26 Sep 1882 in Risør, Norway.
3. Agnes Prebensen was born on 22 Oct 1884 in Risør, Norway.
4. Frtitz Smith Prebensen was born on 02 Dec 1885 in Risør, Norway.
5. Nicolay Grove Prebensen was born on 02 Jan 1888 in Risør, Norway.
6. Alexander Bech Prebensen was born on 26 Feb 1889 in Risør, Norway.
7. Per Preben Prebensen was born on 06 Aug 1896 in Risør, Norway; died on 21 Oct 1961 in Roma, Italy.

Jacob married Wenche Christiane Grove. [Group Sheet] [Family Chart]