Nicolaus Cleyn [sic] & Catharina Rupp were married on 28 May 1765 in Roßlau.
Nikolaus Klein, a farmer, and his family settled in the Volga German colony of Mariental on 14 June 1766. They are recorded there on the 1767 census in Household No. 69.
The 1767 census records that Nikolaus Klein came from the German village of Rixingen in the Lothringen region.
- 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): #840.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 3 (Göttingen: Göttinger Arbeitskreis, 2005): 112.