Helmerich Folkers Janssen - Pedigree | FamilyCentral
 5 Dec 1736 - 21 Nov 1779
  - 12 Oct 1740
  - 19 Sep 1760
 15 Sep 1656 - 13 Aug 1739
  - 2 Jan 1733
  - 10 Apr 1662
Gesche Catherina Janssen
 md. 18 Jul 1779