A house of worship (built of brick during 1849 and 1850) was dedicated.

The evidence

• “A house of worship, built of brick, was erected during the years 1849 and 1850. It was dedicated in the month of Oct., 1850. During the following year an addition was made to its length.”

  1856-history-of-rock-county/25-city-of-janesville.md, PDF p. 184 / book p. 166

  Guernsey, Orrin, and Josiah F. Willard, editors. History of Rock County, and Transactions of the Rock County Agricultural Society and Mechanics' Institute. Janesville, Wis.: William M. Doty & Brother, 1856. Cornell University Library via the Internet Archive, archive.org/details/cu31924028871593.

  Grade A: Found on a page of one of our sources

• “menced building its first house of worship, but it was not finished and dedicated until October, 1850. This was built on the site of the present Congregational church, but was torn down in 1865 to make way for a more pretentious building.”

  1908-brown-rock-county/26-history-of-janesville.md, Vol. 2, PDF p. 29 / book p. 543

  Brown, William Fiske, editor. Rock County, Wisconsin: A New History of Its Cities, Villages, Towns, Citizens and Varied Interests, from the Earliest Times, Up to Date. Chicago: C. F. Cooper & Co., 1908. 2 vols. archive.org/details/rockcountywiscon01brow, archive.org/details/rockcountywiscon02brow.

  Grade A: Found on a page of one of our sources