Adam Zweigert and his family, along with his sister Eva Rosina (age 18) are recorded on the 1798 census of Straub in Household No. Sr21.
Adam Zweigert and his son (Johann Heinrich, age 4) are recorded on the 1811 census of Straub in Household No. 21 along with a note that they relocated to the colony of Neu-Straub [year not recorded].
Adam Zweigert and his family are recorded on the 1834 census of Neu-Straub in Household No. 36.
- 1811 Straub Census (Household No. 21).
- 1834 Neu-Straub Census (Household No. 36).
- 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): Sr21.