November 1842
[The writer] visited Fort Atkinson (his sister Amanda was then living at Aztalan).
The regionGrade A · 1 independent source
The evidence
“The next time I visited Fort Atkinson was in November 1842. My sister, Amanda had married and was living at Aztalan, at that time usually known as the ancient city, a very promising little village.”
1900-caswell-reminiscences/08-hunting-and-outdoor-life.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