Jan married Maria Zweers Wantink on 9 Jun 1748 (burgerlijk huwelijk). Maria (daughter of Jan Zweers Wantink and Teunisken Egberts Onsteink) was born in in Baak; was christened on 18 Apr 1728 in Steenderen; died on 28 Mar 1797 in Baak. [Group Sheet] [Family Chart]

1. Geultjen Vredenburg was born in in Baak; was christened on 28 Feb 1749 in Steenderen.
2. Jan Jansen Vredenburg was christened on 1 Nov 1750 in Steenderen; died on 19 Apr 1833 in Baak.
3. Hendrica Vredenburg was born in in Baak; was christened on 30 Jul 1752 in Steenderen; died before 1753.
4. Hendrica Vredenburg was christened on 29 Jul 1753 in Steenderen; died on 18 Oct 1780 in Baak.
5. Zweer Vredenburg was christened on 25 Apr 1756 in Steenderen; died on 5 May 1756 in Baak.
6. Zweerken Vredenburg was christened on 12 Feb 1758 in Steenderen.
7. Teuntjen Vredenburg was christened on 11 Oct 1761 in Steenderen.
8. Mechelina Vredenburg was christened on 20 Nov 1762 in Steenderen.
9. Willem Vredenburg was christened on 22 Nov 1766 in Steenderen.
10. Arent Vredenburg was born in in Baak; was christened on 4 Mar 1770 in Steenderen.