Familie: Grotjahn, Ernst August Hermann / Koch, Alwine Margarete Luise (F18153)
verh. 1892 | Grotjahn, Ernst Christian August (1833-1899) 
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Reinert, Johanne Justine Caroline (1846-1935)
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| Grotjahn, Ernst August Christian (1864- ) |
| Grotjahn, Wilhel Ernst Ferdinand (1870-1890) |
| Grotjahn, Heinrich August Carl (1872-1924)  |
| Grotjahn, Hermine Auguste Friederike (1877-1953) |
| Grotjahn, Frieda Auguste Caroline (1883-1965) |
| Grotjahn, Caroline Auguste Dorothee (1881- ) |
 | Koch, Johann Ludwig Wilhelm (1824-1899)
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| Lührig, Johanne Wilhelmine Konradine (1824-1874)
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| Koch, August Heinrich Wilhelm (1851- ) |
| Koch, Konradine Friederike (1853- ) |
| Koch, Johanne Auguste Caroline (1855-1880) |
| Koch, Auguste Caroline (1858- ) |
| Koch, Wilhelmine Caroline (1860-1895) |
| Koch, August Friedrich Wilhelm (1863- ) |
| Koch, Anna Johanne Louise (1866- ) |
| Grotjahn, Ernst August Hermann (1867-1945)
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| Koch, Alwine Margarete Luise (1869-1934)
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| Grotjahn, Alwine Hermine Emma (1893-1961) |
| Grotjahn, Auguste Anna Alwine (1900-1976) |