Familie: Duncker, Johann Heinrich / Helmer, Christine Ludolfine Luise Wilhelmine (F8467)
Helmer, Johann Engelhard (1743-1818) 
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Pape, Engel Marie (1750-1815)
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| Helmer, Johann Georg Christian (1769- ) |
| Helmer, Johann Friedrich Ludwig (1770- ) |
Helmer, Johann Heinrich Konrad (1773-1826)  |
| Duncker, Johann Heinrich (1770- ) |