Johann Heinrich Popp (son of Conrad Popp) was born 14 February and baptized 18 February 1714 in Rohrbach, a few miles northwest of Büdingen. Johann Heinrich Popp and Anna Elisabetha Grasmück married in Rohrbach on 19 April 1736. Anna Elisabetha Grasmück (daughter of Johannes and Anna Elisabetha Grasmück) was born 28 October and baptized 2 November in Rorhbach. Among Johann Heinrich Popp and Anna Elisabetha's children born in Rohrbach were: Eva, baptized 12 August 1740; Johann Conrad, baptized 22 April 1742; Anna Elisabeth, baptized 9 July 1748; Johann Heinrich, baptized 5 Oct 1750; Anna Barbara, baptized 22 April 1753; Johanna Elisabetha, baptized 27 August 1755, and Johannes, baptized 16 February 1757.
The Lübeck marriages report that Johann Conrad Popp and Philippine Willman married in the Reformed Church in Lübeck on 31 May 1766.
The Heinrich Popp family and the Conrad Popp couple arrived in Russia on 4 July 1766, along with the related Grasmück and Meisinger families. Widow Anna Elisabetha Popp and her four younger children settled in Balzer and are reported there on the First Settlers List in Household #61. Eva, now married to Johannes Meisinger, is reported in Balzer Household #62. Conrad appears to have died prior to settlement in Messer, and his widow married Jacob Ochsenhirt.
The Movement Tables in the 1798 Census state that Johannes Bopp moved from Balzer to Straub in 1790.
- Rohrbach (Büdingen) parish records (including Aulen-Diebach, Büches, and Stockheim), FHL Film #1201847.
- 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. 167
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010) p. 132
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 1999): p. 89-90
- 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): Volume 2, p. 1065