The biographical subject (P. O. Janesville) was born in Middlesex Co., Conn.

The evidence

• “P. 0. Janesville; born in 1828, in Middlesex Co., Conn.; came to Wisconsin in 1854, and settled in Harmony, Rock Co.; removed to his present location in 1866. Married Miss Mary, daughter of John Cargill, of Sufi'olk Co., N.”

  1879-history-of-rock-county/22-bios-rock.md, PDF p. 793 / book p. 797

  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