Wilhelm Koehler - Pedigree | FamilyCentral
 9 Mar 1781 - 12 Apr 1864
 28 Jul 1740 - 19 May 1789
 2 Sep 1741 - 2 Dec 1793
 10 Jul 1707 - 12 May 1786
 26 Nov 1707 - 18 Oct 1786
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