John F. Heckendorn - Pedigree | FamilyCentral
 Nov 1842 -
 28 Sep 1811 -
 Abt 1812 - 1881
 8 Nov 1782 - 5 May 1821
 Abt 1785 - 27 Aug 1825
 9 Sep 1746 - 24 Aug 1806
 Abt 1750 - 14 Apr 1802
 26 May 1720 - 22 Mar 1782
 Abt 1722 - 1752