Children
- Stella Mary Siemonsma b. 20 Feb 1898, d. May 1980
- Mary Siemonsma + b. Sep 1899, d. 15 Mar 1968
- Albert R. Siemonsma b. 18 Nov 1900, d. 9 Sep 1961
- Theresia Siemonsma b. 30 Dec 1901, d. 21 Mar 1902
- George Joseph Siemonsma + b. 2 Mar 1903, d. 4 Dec 1984
- Harry Francis Siemonsma b. 3 Aug 1904, d. 1906
- Henry Siemonsma b. 10 Aug 1906, d. 6 Jul 1961
- Elmer Siemonsma b. 26 Sep 1907, d. 11 Sep 1961
- Frank Siemonsma b. 27 Dec 1908, d. 8 Jan 1985
- Gerard John Siemonsma + b. 18 Sep 1910, d. 13 Jan 1987
- Joseph Henry Siemonsma b. 17 Oct 1911, d. 22 Sep 1972
- Theresa Siemonsma b. 27 Jul 1913, d. 16 Feb 1963
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