Jan married Geesje Oenes on 26 Jul 1767 in Veendam, Groningen, Nederland. Geesje (daughter of Oene Simens and Trijntjen Gerlofs) was born in 1744 in Hoogezand, Groningen, Nederland; was christened on 25 May 1744 in Hoogezand, Groningen, Nederland; died on Yes, date unknown. [Group Sheet] [Family Chart]

1. Claas Jans was born in 1768 in Veendam, Groningen, Nederland; was christened on 07 Aug 1768 in Veendam, Groningen, Nederland; died on Yes, date unknown.
2. Trijntje Jans was born in 1772 in Wildervank, Groningen, Nederland; was christened on 01 Mar 1772 in Wildervank, Groningen, Nederland; and died.
3. Aaltje Jans Blaauw was born in 1781 in Wildervank, Groningen, Nederland; was christened on 11 Mar 1781 in Wildervank, Groningen, Nederland; died on 13 Mar 1855 in Muntendam, Groningen, Nederland.
4. Cunnigje Jans Blaauw was born in 1785 in Wildervank, Groningen, Nederland; was christened on 03 Apr 1785 in Wildervank, Groningen, Nederland; and died.
5. Oene Jans Blaauw was born in 1787 in Wildervank, Groningen, Nederland; was christened on 07 Oct 1787 in Wildervank, Groningen, Nederland; died on 26 Jun 1859 in Wildervank, Groningen, Nederland.