Orphans Johann Heinrich Wilke (age 20) and his brother Johannes (age 17) are recorded on the 1767 census of Bettinger in Household No. 20 along with their brother-in-law Johann Heinrich Busch (who is married to their sister Anna, age 16).
The 1767 census does not record from where the Wilke family came.
- Pleve, Igor. Einwanderung in das Wolgagebiet 1764-1767 Band 1 (Goettingen: Der Göttinger Arbeitskreis, 1999): 135.