Child #2 Johann Jakob Erdmann, age 10 years 6 months
Child #3 Margaretha Barbara Erdmann, age 9
Child #4 Michael Erdmann, age 1 year 3 months
Brother #1 Heinrich Jakob Erdmann, age 40
Wife of Brother #1 Maria Katharina Erdmann, age 35
Child #5 Heinrich Jakob Erdmann, age 20
Wife of Child #5 Maria Katharina Erdmann, age 24
Child #6 Johann Jakob Erdmann, age 11
Child #7 Katharina Margaretha Erdmann, age 8
Child #8 Maria Katharina Ruppel, age 13, stepdaughter of Heinrich Jakob Erdmann, age 40, daughter of Maria Katharina Ruppel Erdmann, age 24
Brother #2 Johann Adam Erdmann, age 39
Wife of Brother #2 Elisabeth Margaretha Erdmann, age 34
Child #9 Katharina Barbara Erdmann, age 13
Child #10 Katharina Elisabeth Erdmann, age 11
Child #11 Johann Adam Erdmann, age 7 years 3 months
Child #12 Katharina Margaretha Erdmann, age 4
Child #13 Johann Heinrich Erdmann, age 2
Brother #3 Georg Jakob Erdmann, age 25 in 1850, deceased 1853
Wife of Brother #3 Maria Katharina Erdmann, age 28, widow
Child #14 Heinrich Philipp Erdmann, age 7
Child #15 Johann Jakob Erdmann, age 5
Brother #4 Philipp Erdmann, deceased, not specifically named in census but his children and grandchildren are, so this entry was created for him to show their connection to the Erdmann family
Child #16 Georg Philipp Erdmann, age 26, nephew by an unnamed brother [Philipp Erdmann]
Wife of Child #16 Katharina Margaretha Erdmann, age 24
Grandchild #1 Alexander Erdmann, age 3
Grandchild #2 Heinrich Erdmann, age 1
Child #17 Balthasar Erdmann, age 23, nephew by an unnamed brother [Philipp Erdmann]
Wife of Child #17 Katharina Barbara Erdmann, age 21
Grandchild #3 Johann Jakob Erdmann, age 2
Her daughter, Maria Katharina Ruppel, listed below as Child #8, was probably Maria Katharina Happel. There were no Ruppels in Grimm in any of the census records.
If you look at the two surnames side by side, it's easy to see how an H could have been mistaken for an R and an a for a u. Even more telling, the Happel family lived next to the Erdmann family in the 1834 and 1857 censuses.
Maria Katharina's widowed mother, also named Maria Katharina, married Heinrich Jakob Erdmann, one of the men living in the next household. It also appears that she had two other children who remained living with the Happel family: Katharina Elisabeth Happel, age 18 and Georg Jakob Happel, age 14. Maria Katharina, the elder, chose to take her youngest daughter, Maria Katharina, age 13, to live with her in the Erdmann household after she remarried.
Some people will argue that her surname really was Ruppel and that Katharina had married someone from outside the village of Grimm. While there is a chance that may be true, this researcher believes that in this specific case, those chances are slim. This is especially true since the Happels and the Erdmanns lived next to each other for more than 50 years. Although Maria Katharina wasn't a Happel by birth, she lived near the Erdmanns for at least 23 years. Volga Germans have a history of marrying people who lived close to them. Sometimes the simplest answer is the correct answer.
↑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; page 54, family #145, Balthasar Erdmann family.
The Karl Ruppel named in the 1775 census appears to be an error; his name cannot be found in that census. There are no other Ruppels in the 1767, 1834 and 1857 census records.
↑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 83, families #126 and #127.
↑1857 Census of Grimm in the District of Saratov, Russia, families #144 and #145.