Georg Heinrich Willmann, son of Johann Georg Willmann and Anna Catharina Zimmermann, was born 16 October 1736 in Harpertshausen near Babenhausen married Magdalena Sophia Bössler from Umstadt on 24 June 1766 in Büdingen.
The couple, along with his sister Anna Margaretha (also born in Harpertshausen on 7 January 1748), immigrated to Russia arriving from Lübeck at the port of Oranienbaum on 14 September 1766 on a ship under the command of Skipper Reders.
Heinrich, recorded as a widower, settled in the Volga German colony of Frank on 1 September 1767. He is recorded there on the 1767 Census in Household No. 84.
- 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): Fk062.
- 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): 97.
- Mai, Brent Alan, trans. & ed. Transport of the Volga Germans from Oranienbaum to the Colonies on the Volga: 1766-1767 (Lincoln, NE: American Historical Society of Germans from Russia, 1998): 7144-7145.
- Parish records of Harpertshausen.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 1999): 432.
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010): #6513.