Louisa Koch
1839 - 1879 (40 years)(
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- 1 Louisa Koch [1] b. 1839 d. 31 Dec 1879
- Georg Helfrich b. 2 Jun 1825 d. 1881
- 2 Louisa Helfrich [1.1] b. 1859
- 2 Henry Helfrich [1.2] b. 1861
- 2 John Helfrich [1.3] b. 1865
- 2 Louisa Helfrich [1.1]