Fall 1854
Caswell's parents sold their Rock County farm and moved to Fort Atkinson
Rock CountyGrade A · 1 independent source
The evidence
“In the years of 1853 and 1854 I boarded and made my home with Mr. Dwight Foster, the first settler of Fort Atkinson. But my parents sold their farm in Rock County and came here to live in the fall of 1854 and from that time on, until I was married, I lived with them. Mr.”
1900-caswell-reminiscences/10-politics-and-congress.md, PDF pp. 3–27
Caswell, Lucien Bonaparte. The Reminiscences of the Hon. L. B. Caswell. Written at Fort Atkinson, Wis., 1914–1916; four-column newspaper reprint, newspaper and date unidentified. University of Wisconsin-Madison Libraries.
Grade A: Found on a page of one of our sources