An act of the Territorial Legislature set off all of Rock County as a separate town named Rock.

The evidence

• “By an act of the Territorial Legislature, approved March 8, 1839, all of " the country included within the boundary of Rock County " was " set off" into a separate town by the name of Rock. Its boundaries, therefore, were co-extensive with the present limits of the county ; but”

  1879-history-of-rock-county/13-rock-county-ch07-town-histories.md, PDF p. 518 / book p. 522

  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