Ferguson was born in Factory Village, New York.

The evidence

• “FERGUSON ; was' born in Factory Village, N. Y, Nov. 13, 1838, and Springs, N. Y. ; thence to Roscoe, 111., and from there to Shirland, 111., where he farmed on his own account, and also learned the carpenter's trade ; enlisted for sixty days in 1862, and re-enlisted in the 156th I.”

  1879-history-of-rock-county/18-bios-beloit.md, PDF p. 742 / book p. 746

  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