Gerard John Siemonsma
b. 18 September 1910, d. 13 January 1987
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- 1 Gerard John Siemonsma b. 18 Sep 1910 d. 13 Jan 1987
- Anastasia Cecilia Schwebach b. 29 Dec 1919 d. 9 Mar 2006
- 2 Gerald Michael Siemonsma b. 8 Dec 1951 d. 16 Oct 1983
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- 3 Chad Allen Siemonsma b. 18 Feb 1983 d. 7 Jun 2004
- 3 Chad Allen Siemonsma
- 2 Jeffrey Paul Siemonsma b. 5 Aug 1961 d. 5 Aug 1961
- 2 Gerald Michael Siemonsma