In 1769, widow Anna Margaretha Jahnke and her children moved from Hummel to Meinhard.
In 1795, Ludwig Jahnke moved from Meinhard to Susannental.
Ludwig Jahnke from Meinhard and his family are recorded on the 1798 census of Susannental in Household No. Ss09.
There are no known surviving male lines of this Jahnke family among the Volga German colonies.
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga: Economy, Population, and Agriculture (Lincoln, NE: American Historical Society of Germans from Russia, 1999): Ss09, Mv1019.