Children:
- 1. Trijntje Harmens Sijsling was born on 03 Mar 1793 in Britswerd, Baarderadeel, FR, NLD.
- Hinke Harmens Sijsling was born on 29 Sep 1794 in Mantgum, Baarderadeel, FR, NLD.
- Hitje Harmens Sijsling was born on 12 May 1796 in Mantgum, Baarderadeel, FR, NLD.
- Rinse Harmens Sijsling was born on 19 Oct 1797 in Mantgum, Baarderadeel, FR, NLD.
- Pier Harmens was born on 18 Jul 1800 in Mantgum, Baarderadeel, FR, NLD; died before 1806.
- Jan Harmens was born on 16 Oct 1802 in Mantgum, Baarderadeel, FR, NLD; died before 1804.
- Jan Harmens Sijsling was born on 05 Sep 1804 in Mantgum, Baarderadeel, FR, NLD.
- Pier Harmens was born on 30 Apr 1806 in Mantgum, Baarderadeel, FR, NLD; died before 1808.
- Pier Harmens Sijsling was born on 05 May 1808 in Jorwerd, Baarderadeel, FR, NLD.
- Gerritje Harmens Sijsling was born on 21 Feb 1811 in Jorwerd, Baarderadeel, FR, NLD.
- Betje Harmens Sijsling was born on 02 Mar 1813 in Beers, Baarderadeel, FR, NLD.
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