Mortimer died (born March 24, 1857).

The evidence

• “Netta L., born July 9. 1872 ; Mortimer, born March 24, 1857, died July 27, 1858.”

  1879-history-of-rock-county/27-bios-fulton.md, PDF p. 844 / book p. 848

  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