According to the Niedermittlau parish records, Johannes Reiswig, a widower, and Anna Catharina (surname unclear) were married on 3 Feb 1757 in Neuenhasslau. The births of two children are recorded in Neuenhasslau – Johann Georg, born 11 Nov 1757 and baptized 13 Nov 1757, and Anna Margaretha, born 9 May 1762 and baptized 16 May 1762. The family arrived in Russia on 29 Aug 1766. They settled in Walter and are reported there on the First settler's List in Family #46.
- Parish records of Niedermittlau on Archion.de
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010): p. 240.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Nordost-Institute, 2008): p. 305.