Johann Bertram, a cobbler (Schuhmacher), and his family arrived from Lübeck at the port of Oranienbaum on 9 August 1766 aboard the pink Slon under the command of Lieutenant Sergey Panov.
They settled in the Volga German colony of Kraft on 18 August 1767 and are recorded there on the 1767 census in Household No. 33 along with Johann's brother Johann Georg (age 16).
Johann Bertram and his family are recorded on the 1798 census of Kraft in Households No. Kf02, Kf39, & Kf53.
Konrad Bertram and his family are recorded on the 1834 census of Dreispitz in Household No. 76.
The 1767 census records that Johann Bertram came from the German village of Gießen in the district of Isenburg.
- 1834 Dreispitz Census (Household No. 76).
- 1834 Kraft Census (Households No. 77, 89, 96).
- 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): Kf02, Kf39, Kf53.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 2 (Göttingen: Der Göttinger Arbeitskreis, 2001): 402.
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010): #4047.