Henrich Leicker, with his wife Elisabeth and four children, left Wehrheim in June 1766. They arrived from Lübeck at the port in Oranienbaum on 15 September 1766 on a ship under the command of Hans Karholm. but are recorded with five children: Conrad, 18; Jacob, 17; Barbara, 16; Maria, 4; and Margaretha, age 3.
Both parents died on the journey between Oranienbaum and Saratov, as did daughters Maria and Margaretha, and son Johann, who was born and died on the trek.
Konrad Leiker is recorded on the 1798 Census of Ober-Monjou in Household No. Om48. Jakob Leiker is recorded there in Household No. Om58. Daughter Barbara married in 1792 to Jakob Mertz of Schönchen and is recorded there in 1798 in Household No. Sn03.
- 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): Om02, Om48, Om58, Om66.
- 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): entries 2690-2698.
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010): 431.
- Struck, Wolf-Heino. "Die Rußlandauswanderung von 1766 aus den gemeinschaftlich kurtrierischen und nassau-oranischen Ämtern Camberg und Wehrheim." Nassauische Annalen 89 (1978): 255.