Johann Adam Heckmann, a farmer, and his family (wife & 5 children) immigrated to Denmark (Schleswig-Holstein) arriving in Flensburg on 19 June 1762.
They joined the migration to Russia and settled in the Volga German colony of Balzer on 28 March 1766. Adam Heckmann and his family are recorded there in Household No. 25. His son Michael Heckmann and his family are recorded in Household No. 27.
The 1767 census records that Adam Heckmann came from the German region of Kurpfalz. The Eichhorns record that Johann Adam Heckmann came from the German region of Württemberg.
- Eichhorn, Alexander, Jacob & Mary Eichhorn. The Immigration of German Colonists to Denmark and Their Subsequent Emigration to Russia in the Years 1759-1766 (Deiningen, Germany: Drukerei und Verlag Steinmeier GmbH & Co. Kg, 2012): B-582.
- 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): Bz059, Bz068.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 1999): 78, 79.