In the book's own words, not ours, with obvious scanning errors fixed. Families often supplied these stories to the publisher, so check key dates.
From History of Dubuque County, Iowa; being a general survey of Dubuque County history, including a history of the city of Dubuque and special account of districts throughout the county, from the earliest (1911)
Joseph Schemmel, for many years one of the foremost men in the western portion of Dubuque county, was a native of Munster, Province of Westphalia, Germany. He came to America in 1842 and for six years, in partnership with his three brothers, Henry, Anton and Christopher, operated a woolen mill at Hamilton, Ohio. In 1848 he came to Dubuque county, and with his brothers engaged in flour and woolen goods manufacturing. Here he was joined in wedlock with Miss Elisabeth Vente, a native of Oldenburg, Germany. To them were born ten children, three daughters and seven sons. Subsequently the flour mill burned, but the woolen mill continued to be operated many years and was a notable institution in the western part of the county. Joseph Schemmel was well known for his activity, his upright life, and the prominence he attained in local affairs. He conducted the postoffice at New Vienna for a number of years, served as a member of the board of supervisors, also as township assessor and as a justice of the peace. He died in 1898, at the age of seventy-one years, and his wife in 1907, aged seventy-one years. Both are buried at New Vienna.
As printed in History of Dubuque County, Iowa; being a general survey of Dubuque County history, including a history of the city of Dubuque and special account of districts throughout the county, from the earliest (1911). See the original pages. Wording is the original; obvious scanning errors have been corrected, and a few may remain.
Their biographies name Joseph Schemmel: William Schemmel (b. 1858)
The printed record stops around 1911. We trace your line from there down to you, with every source cited.