A marriage to Mary A. Kingsbury.

The evidence

• “Northrop ; on account of ill health, was mustered out Jan. 1, 1863. He married on the 15th of May, 1853, Mary A. Kingsbury, who was born in Stafibrd, Genesee Co., N.”

  1879-history-of-rock-county/18-bios-beloit.md, PDF p. 733 / book p. 737

  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