John Davidson Helmer - Pedigree | FamilyCentral
 4 Mar 1819 - 28 Jan 1904
 30 Aug 1788 - 25 Apr 1865
 21 Sep 1788 - 31 Dec 1836
 15 Jan 1758 - 5 Aug 1837
 1760 - 1837
 27 Dec 1715 - 27 Jun 1783
 1719 - 14 Mar 1765
 1702 - Nov 1789
 5 Jul 1725 - 9 Oct 1822
 5 Feb 1689/90 - 27 Jun 1781
 1694 -
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