Georg Heinrich Willmann from Harpertshausen (near Babenhausen) married Magdalena Sophia Bössler from Umstadt on 24 June 1766 in Büdingen. The couple, along with Georg Heinrich's sister Anna Margaretha, arrived in Russia on 14 Sep 1766. Georg Heinrich Willmann was born on 16 Oct 1736, and his sister Anna Margaretha was born on 7 Jan 1748. Their parents were Johann Georg Willmann and Anna Catharina Zimmermann. The family can be traced back several generations in Harpertshausen, Babenhausen, and Altheim. Heinrich Willman is reported as a widower on the Frank First Settler's List.
- Parish records of Altheim on Archion.de
- Mai, Brent Alan and Dona Reeves-Marquardt. German Migration to the Russian Volga (1764-1767) (Lincoln, NE: American Historical Society of Germans from Russia, 2003): p. 97
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010) p. 411
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 1999): p. 432