Johann Heinrich Meÿ [sic], a journeyman cobbler (Schustergesell), and Maria Elisabeth Sophia Rehl were married on 18 June 1764 in St. Peter's Lutheran Church in Lübeck.
Heinrich May, a cobbler (Schuhmacher), and his wife Maria Elisabeth settled in the Volga German colony of Shcherbakovka on 15 June 1765. They are recorded there on the 1767 census in Household No. 25.
Christoph Mai from Shcherbakovka and his family are recorded on the 1857 census of Gnadentau.
The 1767 census records that Heinrich May came from the German town of Königsberg.
- 1857 Gnadentau Census.
- 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): Sv52.
- Mai, Brent Alan and Dona Reeves-Marquardt, German Migration to the Russian Volga (1764-1767) (Lincoln, NE: American Historical Society of Germans from Russia, 2003): #1.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Göttinger Arbeitskreis, 2008): 251.