Head of the Household Friedrich Christian Schwemmer, age 27, working in Sarepta with passport
Wife Sofia Tiner Schwemmer, age 25, from Galka, working in Sarepta, with passport
Child #1 Johann Balthasar Schwemmer, age 2
Child #2 Johann Georg Adam Schwemmer, age 6 months
Sofia is not mentioned in the 1834 census and her husband died in 1816. It's possible that she, too, is deceased. It's also possible that she remarried, since she would have been only 43 at the time of her husband's death. Regardless, it appears that all her sons are listed in the original family entry in the 1834 census. I am showing the family's 1834 census entry below so she can be connected to her children and grandchildren.
Head of the Household Christian Schwemmer, age 44 in 1816, deceased 1816
Child #1 Georg Adam Schwemmer, age 36
Wife of Child #1 Anna Margaretha Schwemmer, age 40
Grandchild #1 Georg Christian Schwemmer, age 15
Grandchild #2 Johann Philipp Schwemmer, age 9
Child #2 Georg Jakob Schwemmer, age 11 in 1816, deceased 1816
Child #3 Mattias Schwemmer, age 28
Wife of Child #3 Louisa Schwemmer, age 23
Grandchild #3 Anna Margaretha Schwemmer, age 6 months
Child #4 Jakob Wilhelm Schwemmer, age 24
Wife of Child #4 Maria Elisabeth Schwemmer, age 21
Child #5 Christian Jakob Schwemmer, age 22
↑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 #139 in the 1798 Grimm census, Friedrich Christian Schwemmer family.
↑1834 Census of Grimm in the District of Saratov, Russia, dated 2 February 1835; Translated by Brent Mai, Concordia University, Portland, Oregon; Published by Dynasty Publishing, Beaverton, OR, USA; Published 2011; page 72, family #237, Christian Schwemmer family.