John Griffith reached Janesville in the spring of 1850.

The evidence

• “JOHN CirRIFFITH, an enterprising citizen and well-known merchant; reached Janesville in the spring of 1850; immediately upon his arrival, Mr. GriflBth became an apprentice of R.”

  1879-history-of-rock-county/17-bios-janesville.md, PDF p. 703

  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