Carl Friedrich Kettwichter 1873– | | |
| | Antoinette Carolina Elise Sophia (Elise) Helmig 1840–1916 | | | | Diedrich Henrich (II.) Helmig 1805–1847 Henriette Wilhelmine Amalie (Amalie) Giffhorn 1811–1852 | | | | Johann Diederich Henrich (I.), (Diederich) Helmig 1771–1817 Louisa Wilhelmina Charlotta (Luise) Osthaus 1775–1815 | | | | Johann Wilhelm Helmig 1727–1785 Anna Sophia Catharina Merschmann 1739–1796 | | | | Johann Diedrich Helmig 1687–1766 Clara Anna (I.) Volkermann 1696–1775 | | |
| | | Godfried Henrich Fischer, d. Heirat gt. Merschmann 1716–1787 Clara Catharina Clothmann (Schürmann, gt. Clothmann) 1706–1758 | | |
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| | | Johann Gottfried Osthaus 1738–1811 Maria Catharina Volckermann 1735–1815 | | |
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| | | Gottina Johanna Hü(h)nefeld – |
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