Children:
- 2. Johann Joachim Christof - Joseph - JAHNKE was born on 13 Sep 1841 in Rastow, Ludwigslust-Parchim, Mecklenburg-Vorpommern, Germany; died on 9 Dec 1923 in Castalia, Winneshiek, Iowa, USA.
- Johann Friedrich Christoph JAHNKE was born on 24 Jan 1844 in Rastow, Ludwigslust-Parchim, Mecklenburg-Vorpommern, Germany; died on 11 Nov 1844 in Rastow, Ludwigslust-Parchim, Mecklenburg-Vorpommern, Germany.
- Johann Christian Christoph JAHNKE was born on 16 Dec 1845 in Rastow, Ludwigslust-Parchim, Mecklenburg-Vorpommern, Germany.
- Maria Sophia Johanna JAHNKE was born on 19 Jul 1848 in Rastow, Ludwigslust-Parchim, Mecklenburg-Vorpommern, Germany.
- Dorothea Elise Sophia JAHNKE was born on 13 Dec 1849 in Rastow, Ludwigslust-Parchim, Mecklenburg-Vorpommern, Germany; died on 11 Feb 1850 in Rastow, Ludwigslust-Parchim, Mecklenburg-Vorpommern, Germany.
- Carl Jochim Heinrich Christian JAHNKE was born on 10 Mar 1851 in Rastow, Ludwigslust-Parchim, Mecklenburg-Vorpommern, Germany.
- Friederich JAHNKE was born in 1853.
- Johann Ludwig JAHNKE was born on 12 Oct 1858 in Rastow, Ludwigslust-Parchim, Mecklenburg-Vorpommern, Germany.
- Adolf Christian Ludwig JAHNKE was born on 25 Mar 1861 in Rastow, Ludwigslust-Parchim, Mecklenburg-Vorpommern, Germany.
- Sophia Maria Auguste JAHNKE was born on 25 Dec 1863 in Rastow, Ludwigslust-Parchim, Mecklenburg-Vorpommern, Germany; died on 26 Apr 1868 in Rastow, Ludwigslust-Parchim, Mecklenburg-Vorpommern, Germany.
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