Gunder (of Avon) was born in Norway.

The evidence

• “P. 0. Avon ; born in Norway in 1844 ; came to Wisconsin in 1861, locating with his father at Spring Valley ; afterward moved to Avon ; in 1K70, on the death of his father, Gunder took possession of the farm, which consists of 120 acres, his present homestead. Member School Board., Republican.”

  1879-history-of-rock-county/34-bios-avon.md, PDF p. 879 / book p. 883

  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