Hartwig, John Henry - Pedigree | FamilyCentral
 5 Mar 1891 - 24 Feb 1935
 28 Aug 1856 - 21 Dec 1929
 26 Nov 1859 - 14 Sep 1916
 10 Apr 1824 - 12 Jul 1912
 9 Jun 1827 - Oct 1875
 1 Jan 1821 - 16 Dec 1893
 31 May 1826 - 8 Mar 1891
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