NGV Stambomenverzameling
Gezin: Johan Godfried Koch / Catharina Margaretha Obertop (F16730)
getr. 21 dec 1848Carel Frederik Koch (1776- ) 
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Geertruijda Emenes, van (1797- )
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| Jan Hendrik Obertop (1794- )
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| Alida Hanstein (1787- )
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Elisabeth Obertop (1820-1861)  |
| Johan Godfried Koch (1817- )
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| Catharina Margaretha Obertop (1823-1907)
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| Karel Frederik Koch (1837-1875) |
| Ferdinand Jacobus Koch (1851-1881) |
| Maria Louisa Koch (1858-1927) |
| Sophia Margaretha Koch (1868-1944) |