1841
The First Methodist Episcopal Church of Janesville was organized, with Rev. Alpha Warren as pastor; Janesville first appears in the minutes as head of a charge.
The evidence
“The First Methodist Episcopal Church. — Janesville appears first in the minutes as the head of a charge in 1841, with Rev. Alpha Warren as Pastor.”
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 “The First Methodist Episcopal Church, of Janesville, was organized in 1841, with Rev. Alpha Warren as the pastor.”
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