Griswold Weaver took the first load of grain (buckwheat and corn) from the town to a mill on the Piskasaw River below Belvidere, Illinois; the miller returned the toll instead of the grist.

The evidence

• “The price varied according to the running qualities of the animal. We frequently got those that were said to have been "inside of two-forty on the plank." They had countenances much resembling, in longitude, those of disappointed politicians, The first load of grain, consisting of buckwheat and corn, sent to mill from this town, was taken by Griswold Weaver to a mill on the Piskasaw river, somewhere below Belvidere, IL, in the month of January, 1838. The miller, as was customary at that time, returned the toll instead of the grist.”

  1856-history-of-rock-county/07-clinton.md, PDF p. 91 / book p. 73

  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