Children:
- Wimke Siebes was born on 13 Aug 1761 in Lemmer, Lemsterland, FR, NLD.
- Aaltje Siebes was born on 04 Dec 1766 in Lemmer, Lemsterland, FR, NLD.
- Lieuwkjen Siebes de Vrij died on 07 Dec 1837 in Wijk B, no. 79, Stavoren, FR, NLD.
- Uilke Sijbes de Vrij was born on 27 Mar 1773 in Lemmer, Lemsterland, FR, NLD; died on 30 Apr 1810 in Harlingen, FR, NLD.
- Gerbrand Siebes was born on 01 May 1776 in Lemmer, Lemsterland, FR, NLD.
- Dirk Siebes was born on 27 Feb 1778 in Lemmer, Lemsterland, FR, NLD.
- 1. Gerbrig Siebes de Vrij was born on 04 Sep 1780 in Lemmer, Lemsterland, FR, NLD; died on 17 Oct 1822 in Lemmer, Lemsterland, FR, NLD.
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