T. Curtis, from Ohio, settled [in the county] in 1838.

Rock CountyGrade A · 1 independent source

The evidence

“T. Curtis Ohio 183H 1838 S. G.”
1879-history-of-rock-county/13-rock-county-ch07-town-histories.md, PDF p. 523
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
The printed page (PDF p. 523). The passage could not be located on the scan automatically.