John Georg Hertkorn - Pedigree | FamilyCentral
 18 Jan 1796 - 20 Dec 1840
 28 Aug 1764 - 4 Apr 1821
 27 Sep 1761 -
 24 Apr 1736 -
 Abt 1737 -
 6 Feb 1735 -
 Abt 1730 -