Konrad Geiser, a farmer, and his wife Anna Margaretha settled in the Volga German colony of Kraft on 18 August 1767 and are recorded there on the 1767 census in Household No. 65.
The 1767 census records that Konrad Geiser came from the German village of Bieber.
There are no known surviving male lines of this family among the Volga German colonies.
- Pleve, Igor. Einwanderung in das Wolgagebiet 1764-1767 Band 2 (Göttingen: Der Göttinger Arbeitskreis, 2001): 410.