1837
Goodhue bought of Blodgett a share of the claim for two thousand dollars; the 1856 history says three-twelfths and the 1879 history one-fourth — both readings are reported.
The propertyGrade A · 1 independent source
The evidence
“Goodhue, in 1837, bought of Blodgett three-twelfths of the claim, at the price of two thousand dollars.”
1856-history-of-rock-county/06-beloit.md, PDF p. 68 / book p. 50
Guernsey, Orrin, and Josiah F. Willard, editors. History of Rock County, and Transactions of the Rock County Agricultural Society and Mechanics' Institute. Janesville, Wis.: William M. Doty & Brother, 1856. Cornell University Library via the Internet Archive, archive.org/details/cu31924028871593.
Grade A: Found on a page of one of our sources