Johannes Mertz and his family settled in the Volga German colony of Reinhard. Johannes died and his widow, Elisabeth, remarried to Johann David Klinger.
The combined Klinger/Mertz families are recorded on the 1767 census in Household No. 29.
The 1767 census records that Elisabeth Mertz came from the German village of Flor [Florstadt?] in the region of Isenburg.
- 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): Rh01.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Göttinger Arbeitskreis, 2008): 27.