Johann Hardt, a blacksmith (Schmied), and his wife Eva Katharina settled in the Volga German colony of Anton on 28 April 1766. They are recorded there on the 1767 census in Household No. 44.
Widower Johann Hardt and his family are recorded on the 1798 census of Anton in Household No. An15. Johann Michael (senior) Hardt, believed to be the son of Johann Hardt, and his family are recorded on the 1798 census of Anton in Household No. An19.
Johann Michael (junior) Hardt, son of the aforementioned Johann Michael (senior) Hardt, relocated from Anton to Lauwe in 1834. They are recorded on the 1834 census of Lauwe in Household No. 20.
Jost Heinrich Hardt, another son of the aforementioned Johann Michael (senior) Hardt, relocated to the colony of Messer.
The 1767 census records that Johann Hardt came from the German village of Stapen in Prussia.
- 1834 Anton Census (Households No. 21, 39, 47, 80).
- 1834 Lauwe Census (Household No. 20).
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga (Lincoln, NE: American Historical Society of Germans from Russia, 1999): An15, An19.
- Pleve, Igor. Einwanderung in das Wolgagebiet 1764-1767 Band 1 (Goettingen: Der Göttinger Arbeitskreis, 1999): 65.