Jonas Lundgrün, a cobbler (Schuhmacher), his wife Christina Idilia, daughter Maria Barbara (age 1), and stepsons (Lorenz [Leonhardt] & Johann [Leonhardt]) are recorded on the 1767 census of Kratzke in Household No. 31. They had settled there on 7 August 1766.
In 1793, Johannes Lundgrün and his family moved from Kratzke to Stahl am Tarlyk.
Lorenz Leonhardt from Kratzke is recorded on the 1798 census of Schuck in Household No. Su10. Johann Leonhardt from Degott is recorded on the 1798 census of Franzosen in Household No. Fz20.
The 1767 census records that Jonas Lungrin came from the Swedish town of Stockholm.
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga (Lincoln, NE: American Historical Society of Germans from Russia, 1999): Fz20, St05, Su10, Mv1428.
- Pleve, Igor. Einwanderung in das Wolgagebiet 1764-1767 Band 2 (Goettingen: Der Göttinger Arbeitskreis; 2001): 457.