Johann Martin Hagenau, a craftsman (Handwerker), and his family settled in the Volga German colony of Rosenheim on 27 July 1765. They are recorded there on the 1767 census in Household No. 34.
The 1767 census records that Johann Martin Hagenau came from the German village of Stralsund in Swedish Pomerania.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Göttinger Arbeitskreis, 2008): 70.