March 9, 1839
Henry Dodge was re-appointed (to territorial office).
Nation and worldGrade A · 1 independent source
The evidence
“Henry Dodge, appointed April 13th, 1836; re-appointed March 9th, 1839. James Duane Doty, appointed Sept. 30th, 1841.”
1856-history-of-rock-county/01-wisconsin.md, PDF p. 22 / book p. 4
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