Johannes Heinrich Reuel died in Gelnhausen. He had been married to Johanna Margaretha Buss, daughter of Wilhelm Buss. She had been born in 1711 in Gelnhausen. They have the following children, each born in Gelnhausen: (1) Anna Maria, born 10 May 1730; (2) Johanna Margaretha, born 12 February 1733; (3) Johann Peter, born 29 September 1735; (4) Johann Wilhelm, born 19 May 1743; (5) Konrad Heinrich, born 31 May 1745; (6) Adam Wilhelm, born 23 Mary 1749; and (7) Maria Frederike, born 17 July 1754.
Widow Margaretha Reuel went to Russia in 1766, arriving from Lübeck at the port in Oranienbaum on 4 July 1766 aboard Der Junge Mathias. Only sons Wilhelm and Conrad and daughter Margaretha were with her at that time.
By the time that Margaretha arrived in the colony of Dönhof on 18 June 1767, only son Wilhelm was with her. Neither are recorded on the 1798 Census in Dönhof, but there are three letters in the city archives of Gelnhausen that Wilhelm wrote to various parties between 1787 and 1790, so he was living until at least that time. There appear to be no Ruhl descendants that survived from this family.
- 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).
- 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): 122-123, 707-723, 728-729, 736.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 2 (Göttingen: Göttinger Arbeitskreis, 2001): 367-368.
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010): #1860.