Jan married Aaltje Foppes on 06 May 1752 in r.k. par. H. Franciscus, Bolsward, FR, NLD. [Group Sheet] [Family Chart]

1. Foppe Jans died before 1762.
2. Haring Jans Teernstra died on 10 Aug 1825 in huis 695 Wijk F "buiten de St. Janspoort staande", Bolsward, FR, NLD.
3. Sijbrant Jans
4. Popkje Jans Teerenstra died on 10 Sep 1809 in Franeker, FR, NLD.
5. Antje Jans
6. Foppe Jans Teernstra died on 01 Feb 1860 in Burgwerd, Wonseradeel, FR, NLD.
7. Sijbren Jans Teernstra died on 09 Sep 1834 in Wijk UB huis 9, Franeker, FR, NLD.
8. Allert Jans

Jan married Geertje Johannes Bos on 12 Feb 1786 in Burgwerd, Wonseradeel, FR, NLD. Geertje (daughter of Johannes Jans and Jeltje Hopkes) was born about 1757 in Bozum, Baarderadeel, FR, NLD; died on 17 Jul 1830 in Bozum, Baarderadeel, FR, NLD. [Group Sheet] [Family Chart]

1. Johannes Jans Teernstra died on 12 Sep 1826 in Wijk D no. 461, Bolsward, FR, NLD.
2. Allert Jans died before 1796.
3. Pieter Jans Teernstra
4. Allert Jans Teernstra was born on 01 Apr 1796 in Burgwerd, Wonseradeel, FR, NLD; died on 13 Sep 1823 in Hennaarderadeel, FR, NLD.

Allert married Popkje Pieters on 21 Dec 1715 in Hempens, Leeuwarderadeel, FR, NLD. [Group Sheet] [Family Chart]