May 23, 1841
Oscar and Lucien Churchill helped Ogden plant potatoes.
The regionGrade A · 1 independent source
The evidence
“Oct. 6, 1839.-Ogden and churchill went fishing and got forty or fifty fish: pike, perch, bass, sunfish, suckers, and frogs. May 23, 1841. Oscar and Lucien Churchill helped Ogden plant potatoes. June 5, 1841.- A steam boat built at Aztalan came down the river. Ogden went on it, stayed over night near Catfish and went to Janesville the next day, and got there at two o'clock and Ogden came home on foot, the boat went on to St.”
1900-caswell-reminiscences/07-fort-atkinson-and-early-janesville.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