Henry W. Mellen of Plymouth died at Memphis of disease, and Otis A. was killed at Atlanta.

The evidence

• “Company E had one Rock county private, Henry W. Mellen, of Plymouth, who died at Memphis of disease, August 20, 1864. First Lieutenant Edward F, Hobart, an efficient officer, enlisted from Baraboo, where he was principal of the school, but he was born and brought up at Beloit, Rock county, and was a graduate of Beloit college.”

  1908-brown-rock-county/16-military-history.md, Vol. 1, PDF p. 393 / book p. 362

  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

  

• “Oscar died in hospital Feb. 7, 1863 ; Otis A. was killed at Atlanta Aug. 20, 1864, and Horace lost his left arm at Resaca, Ga. ; he is now Clerk of Court in Benton Co., Iowa.”

  1879-history-of-rock-county/25-bios-milton.md, PDF p. 809 / book p. 813

  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