Rock, with Walworth, Green and Dane counties, was made the Second Judicial District, to which Justice Irwin was assigned.

The evidence

• “By an act of the Territorial Legislature approved November 15, 1886, the counties of Brown and Milwaukee (the last-mentioned including also what is now Rock County), was constituted the Third District, and assigned to Justice Frazer. By the statutes of Wisconsin Territory of 1839, the counties of Walworth, Rock, Green and Dane were made the Second District, to which Justice Irwin was assigned. Rock County continued in this district until the adoption of the State Constitution. In pursuance of a law passed by the Territorial Legislature February 13, 1839, the first term of the District Court was held in April following, by Judge Irwin, in a small wooden building standing on the west side of Main street, in the embryo village of Janesville. This was a day of small things ; it does not appear that much business was done.”

  1879-history-of-rock-county/10-rock-county-ch04-early-maps-courts-railroads.md, PDF p. 359 / book p. 363

  Butterfield, C. W., et al. The History of Rock County, Wisconsin: its early settlement, growth, development, resources, etc. Chicago: Western Historical Company, 1879. Cornell University Library via the Internet Archive, archive.org/details/cu31924028871585.

  Grade A: Found on a page of one of our sources

  

• “Frazer was assigned to this district. Three years later, in 1839, Rock county, together with Dane, Walworth and Green counties were constituted the Second district by statute enactment, and so continued until the State Constitution was adopted—Justice Irwin being assigned to preside over it. Pursuant to an enactment of the territorial legislature, passed in the winter of 1839, the first term of the District court in Rock county convened at Janesville on April 15, following, with Judge Irwin on the bench. Among the first items of business vC^as the issuing of a venire by the newly appointed clerk, Mr.”

  1908-brown-rock-county/32-courts-and-legal-profession.md, Vol. 2, PDF p. 208 / book p. 712

  Brown, William Fiske, editor. Rock County, Wisconsin: A New History of Its Cities, Villages, Towns, Citizens and Varied Interests, from the Earliest Times, Up to Date. Chicago: C. F. Cooper & Co., 1908. 2 vols. archive.org/details/rockcountywiscon01brow, archive.org/details/rockcountywiscon02brow.

  Grade A: Found on a page of one of our sources · may repeat 1879-history-of-rock-county, so not counted as independent

  

• “nt Martin Van Buren appointed Andrew G. Miller as an associate justice of the supreme court of the Territory of Wisconsin. On statehood in 1848, Justice Miller was appointed by President James J. Polk, judge of the District Court of the United States for the District of Wisconsin, with his court established in Milwaukee, where he continued in a long and distinguished career as a federal judge. Second Judicial District, Territory of Wisconsin In 1839, Rock County with a population of 1,701, together with Dane County, population 314, Walworth County, population 2,611, and Green County, population 926, were constituted by the Territorial Legislature as the Second Judicial District, with Justice David Irwin, assigned to the district. The Act provided for holding of at least two terms of the District Court in each organized County in the District. The first term of the Second District Territorial Court held in Rock County convened in Janesville, April 15, 1839, to organize the court, and adjourned April 17, 1839. The first judgment rendered was in the case of Milton W. Warner vs. Charles Johnson, entered on default when Mr. Johnson failed to appear. There was no courthous”

  https://beloithistory.org/court-history-rock-county-wi/

  beloithistory.org, https://beloithistory.org/court-history-rock-county-wi/

  Grade B: Found on an institutional web page