Janesville city officers were elected (William A. Lawrence, mayor).

The evidence

• “City Officers elected April 6, 1858. — Mayor, William A. Lawrence ;”

  1879-history-of-rock-county/14-rock-county-ch08-janesville.md, PDF p. 534 / book p. 538

  Butterfield, C. W., et al. The History of Rock County, Wisconsin: its early settlement, growth, development, resources, etc. Chicago: Western Historical Company, 1879. Cornell University Library via the Internet Archive, archive.org/details/cu31924028871585.

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