1846
The Chamberlin family moved to Beloit, to a farm a few miles west of Beloit.
The evidence
“Chamberlin, a clergyman of the Methodist Episcopal Church, was one of the pioneers of Illinois and of Wisconsin, and to him most of the customary opportunities for education and culture were denied, but in spite of this, through the force of his natural abilities, singleness of purpose and strength of religious conviction, did much of good, if not of celebrity, in his life-work, and transmitted to his descendants his own sterling qualities of mind and heart, which, under the more faviirable opportunities for development, have won for them a wide recognition of merit. The family moved to Beloit in the year 1846, and here twelve years of the young son's life were occupied with such duties as he was capable of performing upon the farm and in attendance at the district school ; at the age of 14, he began his preparation for college; the eight succeeding years were mainly spent in the preparatory and collegiate departments of Beloit College, his course of study being somewhat interrupted by an occasional term of teaching ; he graduated from the College in 1866, at the age of 22, and taught the two succeeding years, being Principal for that time of the High School at Delavan, Wis. ; whil”
1879-history-of-rock-county/18-bios-beloit.md, PDF p. 736 / book p. 740
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
“Thomas Chrowder Chamberlin was born in Mattoon, 111., September 25, 1843. His father, a Methodist minister, moved his large family of boys in 1846 to a farm a few miles west of Beloit, Wis., where Thomas worked and attended district school. At the age of fourteen he began preparing for Beloit College and graduated in my class of 1866.”
1908-brown-rock-county/34e-biographical-5.md, Vol. 2, PDF p. 602 / book p. 1086
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