Orphan Karl Joseph Iserloh (age 9) is recorded on the 1767 census of Keller in Household No. 9 along with his sister Anna Elisabeth and her husband Hermann Müller.
The 1767 census does not record from where Karl Joseph Iserloh came.
There are no known surviving male descendant lines of this family among the Volga German colonies.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 2 (Göttingen: Göttinger Arbeitskreis, 2001): 343.