John David Heydrich - Pedigree | FamilyCentral
 15 Jun 1874 - 23 May 1947
 31 Dec 1849 - 7 Feb 1909
 31 Aug 1851 - 15 Oct 1933
 12 Apr 1816 - 1 Jan 1854
 Abt 1817 -
 16 Oct 1774 - 15 Mar 1838
 21 Apr 1777 - 29 Aug 1848
 12 Oct 1741 - 16 Mar 1815
 18 Mar 1750 -
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