Children:
- Hendrik Dirk ten Harmsen van der Beek was born about 1856 in Nieuwer Amstel, NH, NLD; died on 04 May 1888 in Appeltern, GL, NLD.
- 1. Wilhelmina Johanna Josina Maria ten Harmsen van der Beek was born about 1856 in Nieuwer Amstel, NH, NLD; died on 04 Dec 1943 in Wassenaar, ZH, NLD.
- Willem Laurens van der Beek was born on 08 Feb 1860 in Aarlanderveen, ZH, NLD.
- Johanna Helena Frederika Jacoba ten Harmsen van der Beek was born on 23 Jan 1864 in Westdongeradeel, FR, NLD; died on 09 Dec 1947 in Utrecht, UT, NLD.
- Arnoldus ten Harmsen van der Beek was born on 12 Mar 1868 in Ferwerderadeel, FR, NLD; died on 08 Nov 1937 in Wassenaar, ZH, NLD.
- Catharina ten Harmsen van der Beek was born on 06 Jul 1870 in Ferwerderadeel, FR, NLD.
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