1801 - 1874 (72 years)(
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Clara Sophie Venske b. Abt 1810 d. 30 Jan 1872 b. Aug 1835 d. 18 Nov 1902
Henrietta Catharina Schumacher b. Abt 1844 d. 22 Mar 1885 b. 15 Jul 1869 d. 10 Feb 1950
Friedrich Albert Gehrmann b. 4 Dec 1867 d. 19 Sep 1934 b. 30 Apr 1893 d. 29 Sep 1964
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