John G. Duncan - Pedigree | FamilyCentral
 Jul 1850 - 10 Nov 1919
 29 Jan 1823 - 21 Feb 1909
 Mar 1823 - 6 Dec 1873
 16 Dec 1800 - 12 Oct 1886
 1798 - Jan 1839
 Abt 1797 -
 Abt 1801 -
  - Abt 1802
  Children