A Norwegian family moved across the state line into Winnebago county, Illinois, where they lived some thirty years.

The evidence

• “Rock county, Wisconsin. In 1840 they moved across the state line into Winnebago county, Illinois, where they lived some thirty years. About 1870 they returned to Rock county, Wisconsin, and the father bought 200 acres of land in Newark township, which he improved and on which he passed the remainder of his life.”

  1908-brown-rock-county/34d-biographical-4.md, Vol. 2, PDF p. 512 / book p. 998

  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