In this record, a son Friedrich, age 18, is named. He would have been 17 in 1766 and should have appeared in the Kulberg Lists, but is missing. Daughter Helena is missing and probably was married and living in another household. Catharina is missing, unless her full name was Catharina Maria Dorothea.
The ages of the children are off, but the family probably only gave approximate ages to those collecting personal data.
Family # 22
Head of the Household Samuel Rusch, age 68, Lutheran farmer from Pommern
Spouse Anna Margaretha, age 41
Child #1 Friedrich, age 18
Child #2 Johann Georg, age 12 [should have been 10]
Child #3 Christian, age 4 [should have been 2]
Child #4 Dorothea, age 10 [if Catharina Maria Dorothea, should have been 9]
Note that daughter Katarina Maria did not appear in the 1767 census, where she should have been identified at age 8. However, daughter Dorothea does appear in the 1767 census at age 10, but not in the 1775 census. Could these be the same person, either misidentified or with three names instead of two, as in Katharina Maria Dorothea?
Pleve, Igor. List of Colonists to Russia in 1766, "Reports by Ivan Kulberg," Ministry of Education and Science of Russian Federation, Saratov State Technical University; Published in Saratov, Russia 2010; page 442, Samuel Rusch, Lutheran farmer from Mecklenburg, document number 7455, wife Anna, and children Georg, age 9, Christian, age 9 months, Helena, age 20, and Catharina, age 8.
Pleve, Igor. Einwanderung in das Wolgagebiet 1764-1767, Herausgegeben von Alfred Eisfeld under Mitarbeit von Sabine Eichwald, Published by the Nordost-Instsitut - 38085 Göttingen, 2005; page 76, family #22, Samuel Rusch, age 68, Lutheran Farmer from Pommern; wife: Anna Margaretha, age 41; son Friedrich, age 18; son Johann Georg, age 12; son Christian, age 4; daughter Dorothea, age 10.
↑The 1775 and 1798 Census of the German Colony on the Volga, Lesnoy Karamysh, also known as Grimm; Published by the American Historical Society of Germans from Russia, Lincoln, Nebraska, USA; Published date: 1995; family #106, Samuel Rusch, age 86; wife Anna Margareta, age 56, Johann Georg, age 17 years 6 months, Christian, age 12, and Katarina Maria, age 16.