Danish documents record Johannes and Andreas Weckesser immigrating to Denmark (Schleswig-Holstein), Johannes in August 1759 and Andreas in May 1760. They are recorded as being from the German village of Sandhausen about 7 kilometers south of Heidelburg in what today is Baden-Württemberg. They and their families left Denmark on 26 April 1763 and joined the migration to the Russian Volga.
Both Johannes and Andreas and their families arrived in the Volga German colony of Anton on 18 July 1765. They are recorded there on the 1767 Census of Anton in Households No. 31 (Johannes) and No. 34 (Andreas). Their descendants are recorded in Anton on the 1798 Census in Households No. An45 - An47.
- Eichhorn, Alexander and Jacob & Mary Eichhorn. The immigration of German colonists to Denmark and their subsequent emigration to Russia in the years 1759-1766 (Deiningen, Germany: Steinmeier, 2012): 637.
- 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): I-252.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 1999): 62-63.