James Henry Hammond was born to John and Margaret Hammond on 15 March 1835 in Donegal, Ireland. He emigrated to the United States in 1852. Hammond married Mary Ann Howell on 5 March 1858 in Wilmington, Delaware. He moved to Utah Territory in 1862 and settled in Tooele, Utah Territory, by 1866. He was a stonemason. Hammond died in Tooele on 14 November 1888.
 “James Henry Hammond,” in History of Tooele County (Salt Lake City: Daughters of Utah Pioneers, Tooele County, 1961), 485; “James Hammond,” 1880 U.S. Census, 2B; James Hammond, passenger arrival record, 1852, “United States Index to Passenger Arrivals, Atlantic and Gulf Ports, 1820–1874,” database with images, FamilySearch, https://www.familysearch.org/ark:/61903/3:1:33SQ-G5V7-TCW?i=4994&cc=1921756&personaUrl=%2Fark%3A%2F61903%2F1%3A1%3AKD5G-93D; James Hammond, “Pennsylvania, Philadelphia Passenger Lists, 1800–1882,” database with images, FamilySearch, https://familysearch.org/ark:/61903/1:1:K8C4-BR6; James Henry Hammond, pioneer travel record, 1 Aug. 1862, Pioneer Database, 1847–1868, https://history.churchofjesuschrist.org/overlandtravel/pioneers/26111; “James Henry Hammond,” Tooele City Cemetery, Tooele, Tooele County, Utah, USA, Find a Grave, posted 2 Jan. 2007 (memorial no. 17266307), accessed 25 Feb. 2020, https://www.findagrave.com/memorial/17266307; James Henry Hammond, “Utah Cemetery Inventory,” Utah State Historical Society.