Christoph Uhrich was born 15 April 1735 in Hofheim, Lampertheim, Worms, Germany. He is the grandson of Ludwig Urich and Anna Maria Bruch, also of Hofheim. Original name appears to have been spelled Urig.
Johannes Urich is recorded on the 1767 census of Dietel as an orphan in Household #3. There he is recorded as the son of the deceased Friedrich Urhich and living in the household of widower Philipp Spreuer.
Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 1 (Göttingen: Göttinger Arbeitskreis, 2001): 280.