Johann Sebastian Eich married on 1 February 1746 in Nieder-Modau to Sophia Philippina Ramge, daughter of Konrad Ramge. They had a number of children including Elisabeth Margaretha (born 9 February 1753 in Georgenhausen) and Johann Dieterich (born 7 May 1764 in Nieder-Modau).
The family immigrated to Russia, arriving at the port in Oranienbaum on 4 July 1766. They settled in the colony of Dobrinka on 20 June 1767 and are recorded there on the 1767 Census in Household No. 73.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 1999): 333.
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010): 134.