Peter married Mary Ann Bingham on 21 Aug 1871 in Salt Lake City, Salt Lake, Utah, USA. Mary (daughter of Erastus Bingham, Jr. and Olive Hovey Freeman) was born on 9 Feb 1854 in Lynn, Weber, Utah, USA; died on 15 Jun 1941 in Ogden, Weber, Utah, USA; was buried on 18 Jun 1941 in Huntsville, Weber, Utah, USA. [Group Sheet] [Family Chart]

1. Erastus Peter Geertsen was born on 31 Aug 1872; died on 24 Jul 1936.
2. Mary Ann Geertsen was born on 30 Nov 1876; died on 3 Jan 1878.
3. Oscar Geertsen was born on 23 Jan 1879; died on 29 Jan 1966.
4. David James Geertsen was born on 27 Mar 1881; died on 2 Sep 1961.
5. Jesse Geertsen was born on 27 Feb 1883; died on 20 Jan 1889.
6. Carl Francis Geertsen was born on 10 Nov 1884; died on 14 Jan 1889.
7. Issac Geertsen was born on 10 Aug 1886; died on 18 Jan 1889.