Familie: Theodor Hermann August Ostendorf / Josephine Hermine Louise Placküter (F1488)
verh. 4 Mai 1894Friedrich August Ostendorf (1838- ) 
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Anna Margarete Sophie Köhne (1844-1911)
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| Diedrich Bernhard Wilhelm Ostendorf (1870- ) |
Diedrich Anton Heinrich Ostendorf (1874-1944)  |
| Johanne Catharine Wilhelmine Ostendorf (1875-1875) |
| Hinrich Wilhelm Ostendorf (1876-1948) |
| Friedrich Wilhelm Ostendorf (1884- ) |
| Theodor Hermann August Ostendorf (1869-1951)
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| Josephine Hermine Louise Placküter (1865-1942) |
| Johann Friedrich August Ostendorf (1896-1973) |