April 4, 1841
A settler arrived in Beloit on a Sunday morning, having walked from Racine in the spring of 1841.
BeloitGrade A · 1 independent source
The evidence
“From Buffalo he worked his way to Milwaukee, and later to Racine, spending a year or two in each place. Finally, in the spring of 1841, he came to Beloit, walking all the way from Racine and carrying his bundle of clothes, fastened to a stick, on his shoulder. It was nine or ten o'clock Sunday morning, April 4, when he arrived and walked up State street, not knowing where to go, and not able to speak a word of American.”
1908-brown-rock-county/34e-biographical-5.md, Vol. 2, PDF p. 599 / book p. 1083
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