The marriage of Johannes Schlotthauer and Anna Maria Eckert is recorded on 9 April 1766 in the parish records of Spielberg. The couple arrived in the Volga German colony of Huck on 1 July 1767 and are recorded there on the 1767 Census in Household No. 11.
- Parish records of Spielberg (Archion.de)
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 2 (Göttingen: Göttinger Arbeitskreis, 2001): 142.