The township of Johnstown was organized by act of the legislature.

The evidence

• “Johnstown. The township of Johnstown was organized by an act of the legislature approved March 21, 1843. The town was bounded on the north by the town of Lima, east by Walworth county, south by the town of Bradford and west by the town of Harmony.”

  1908-brown-rock-county/31-smaller-cities-villages-towns.md, Vol. 2, PDF p. 183 / book p. 689

  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