May 5, 1864
Rock County soldiers were killed at the battle of the Wilderness, including P. Mills and Joseph Pierson.
The evidence
“P. Mills, promoted February 9, and, October 31, 1863, to First Lieutenant, and killed at the battle of the Wilderness May 5, 1864 ; A.”
1879-history-of-rock-county/12-rock-county-ch06-politics-war-record.md, PDF p. 456 / book p. 460
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
On the printed page (PDF p. 456 / book p. 460) · open the whole page “D. Parker, Ezra Pepper, George Peterson (died of wounds received at Cold Harbor June 3, 1864), Joseph Pierson (killed at the battle of the Wilderness May 5, 1864). Clark A.”
1908-brown-rock-county/16-military-history.md, Vol. 1, PDF p. 363 / book p. 333
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
On the printed page (Vol. 1, PDF p. 363 / book p. 333) · open the whole page