Anna Margaretha Ikstadt (age 15) and her brother Johann Anton (age 5) are recorded on the 1767 census of Warenburg in Household No. 1 along with Johann Peter Kreiter and his wife. The 1767 census does not record a relationship between the Ikstadt and Kreiter families.
- 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): Wr073.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Göttinger Arbeitskreis, 2008): 321.