Family #98 in the 1798 Grimm census.
Family #134 in the 1834 Grimm census.
Maria Barbara Bachman was born about 1768 to Johann Adam and Katharina Bachmann in the Volga German village of Paulskaya. It was one of the few Lutheran villages on the east side of the Volga River. Paulskaya was settled in the summer of 1767, named in honor of Catherine the Great's son Paul.
She is probably listed in the 1775 census for Paulskaya, but I don't have access to a copy to confirm. Her parents, however, were the only Bachmann's who settled in Paulskaya in 1767, one year before her birth.
Head of the Household Wilhelm Weilminster [?] [sic], age 30
Wife Maria Barbara Bachman Weilmeister, age 30, from Paulskoye
Child Maria Elisabeth Weilmeister, age 8
Her husband passed away one year before the 1834 census was taken, making her the defacto head of the family. She had only one daughter who married Johann Philipp Schäfer. Therefore, all her descendants would go through the Schäfer family.
Head of the Household Wilhelm Weilmeister, age 48 in 1816, deceased 1833
Wife Maria Barbara [Bachman] Weilmeister, age 65
Child #1 Maria Elisabeth Weilmeister Schäfer, age 45
Husband of Child #1 Johann Philipp Schäfer, age 50
Grandchild #1 Wilhelm Ludwig Schäfer, age 19
Grandchild #2 Konrad Schäfer, age 17
Grandchild #3 Philipp Jakob Schäfer, age 15
Grandchild #4 Wilhelm Schäfer, age 13
Grandchild #5 Elisabeth Schäfer, age 10
Grandchild #6 Eva Katharina Schäfer, age 8
Grandchild #7 Jakob Schäfer, age 5
There were no Weilmeisters in the 1857 census, and in all likelihood, Maria Barbara Weilmeister had probably passed away.
Had she survived, she would have been 89 years old.
The Center for Volga German Studies at Concordia University, Portland, Oregon, online resources, Settlements, Original Colonies, Paulskaya. See: https://bit.ly/2QPF6lR.
Pleve, Igor. Einwanderung in das Wolgagebiet 1764-1767, Band 3, Herausgegeben von Alfred Eisfeld under Mitarbeit von Sabine Eichwald, Published by the Nordost-Instsitut - 38085 Göttingen, 2005; page 334, family #13, Johann Adam, age 23, and Katharina Bachmann, age 26.
↑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 #98 in the 1798 census.
↑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 42, family #134.
↑1857 Census of Grimm in the District of Saratov, Russia, dated 5 November 1857; Translated by Brent Mai, Concordia University, Portland, Oregon; Published by Dynasty Publishing, Beaverton, OR, USA; Published 2005.