Charles Johnston's will was dated (it was recorded October 15, 1839).

The evidence

• “Johnston's will is dated August, 1839, and is witnessed by Horace Hobart, John R. Burroughs, Charles M. Messer. It was recorded October 15, 1839. John P.”

  1879-history-of-rock-county/10-rock-county-ch04-early-maps-courts-railroads.md, PDF p. 367 / book p. 371

  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