Children:
- Tjitske Suardus Posthuma
- Jacobus Suardus Posthuma was born on 30 Apr 1756 in Noorderdrachten, Smallingerland, FR, NLD.
- Sijbrandus Suardus Posthuma was born on 04 May 1757 in Drachten, Smallingerland, FR, NLD; died on 06 Feb 1828 in Gorredijk, Opsterland, FR, NLD.
- 1. Job Suardus Posthuma was born on 12 Jun 1759 in Noorderdrachten, Smallingerland, FR, NLD; died on 23 May 1847 in Smallingerland, FR, NLD.
- Engbert Suardus Posthuma was born about 1761; died on 05 Sep 1850 in Opsterland, FR, NLD.
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