In 1846, Eielson, Andrewson, Anderson and C. [Anderson] were all residents of Rock County.

The evidence

• “Andrewson and Anderson, and in 1846 all these were residents of Rock county. Eielson and Andrewson lived at Jefferson Prairie, Anderson at Beloit and C.”

  1908-brown-rock-county/18-scandinavians.md, Vol. 1, PDF p. 472 / book p. 438

  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