Peter Berkenstock, son of a pastor (Pastorensohn), settled in the Volga German colony of Enders on 27 July 1765. He is recorded there on the 1767 census in Household No. 11 along with his wife Katharina Ignata Eva who was from Krakau, Poland.
The 1767 census records that Peter Berkenstock came from the Swedish city of Stockholm.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 1999): 384.