Johannes Schwerlup (age 6) is recorded on the 1767 census of Leitsinger in Household No. 47 along with his stepfather Simon Limbach.
The 1767 census does not record from where Johannes Schwerlup came.
There are no known surviving male lines of this family among the Volga German colonies.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 3 (Göttingen: Göttinger Arbeitskreis, 2005): 71.