1840
Janesville was taken into the Troy circuit and Rev. James McKean was appointed its first pastor, preaching once every four weeks.
The evidence
“"The Rev. James McKean was the first minister who preached regularly in Janesville The place was taken into the Troy circuit in 1840, and Brother McKean visited it once in four weeks. This year the Rev.”
1879-history-of-rock-county/14-rock-county-ch08-janesville.md, PDF p. 549
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
On the printed page (PDF p. 549) · open the whole page “This edifice was used alternately by the different religious denominations. Janesville was admitted into the Troy circuit in 1840, and the Rev. James McKean was appointed the first pastor, and preached here once every four weeks ; the Rev.”
1908-brown-rock-county/14-janesville-churches.md, Vol. 1, PDF p. 308 / book p. 282
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 · may repeat 1879-history-of-rock-county, so not counted as independent
On the printed page (Vol. 1, PDF p. 308 / book p. 282) · open the whole page