April 20, 1836
Congress created Wisconsin Territory by approving the territorial act. The new territory included the southern Wisconsin region that later contained Rock County and Beloit.
Nation and worldGrade B · 2 independent sources
The evidence
“rairie du Chien and Mineral Point, until his bench was abolished by the creation of the Territory of Wisconsin in 1836. Judge Doty was then elected to Congress in 1838, and subsequently appointed by President James Tyler, in 1841, as the first governor of the Territory of Wisconsin. As Rock County did not exist until 1836, no court activities occurred in Rock County in this era of our history. Territory of Wisconsin and Territorial Justices’ The Territorial Government of Wisconsin was created by Act of Congress approved April 20, 1836. The Territory of Wisconsin consisted of all of the area embracing what is now Wisconsin, Iowa and Minnesota, and part of “Indian Territory,” what was to become North Dakota and South Dakota. The judicial power of the territory was vested by the Act of Congress in a Supreme Court, district courts, probate courts and justices of the peace. Wisconsin’s first judiciary was a three member supreme court, appointed by President Andrew Jackson, cons”
http://www.beloithistoricalsociety.com/courthistory.php
beloithistoricalsociety.com, http://www.beloithistoricalsociety.com/courthistory.php
Grade B: Found on an institutional web page
“Chapter LV → 3593794 United States Statutes at Large , Volume 5 — Public Acts of the Twenty-Fourth Congress , First Session, Chapter 54 United States Congress April 20, 1836. [Obsolete.] Chap. LIV. — An Act establishing the Territorial Government of Wisconsin. [ 1 ] Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, What country shall constitute the Wisconsin Territory. That from and after the third day of July next, the country included within the following boundaries shall constitute a separate Territory, for the purposes of temporary government, by the name of Wisconsin ; that is to say: Bounded on the east, by a line drawn from the northeast corner of the state of Illinois, through the middle of Lake Michigan , to a point in the middle of said lake, and opposite the main channel of Green Bay , and through said channel and Green Bay to the mouth of the Menomonie river ; thence through the middle of the main channel of said river, to that head of said river nearest to the Lake of the Desert ; thence in a dire”
en.wikisource.org, https://en.wikisource.org/wiki/United_States_Statutes_at_Large/Volume_5/24th_Congress/1st_Session/Chapter_54
Grade B: Found on an institutional web page