Edmund D. Horman was born to Charles Horman and Margaret De La Haye on 25 September 1860 at St. Heliers, Jersey. His family immigrated to the United States in June 1868 and subsequently settled in Tooele, Utah Territory. He married Martha Spiers Smith on 15 December 1885, and they had twelve children. Horman was a farmer and owned a shoe business. In 1917 he moved to Salt Lake City, Utah. He died there on 27 February 1945.
 “Edmund D. Horman,” in History of Tooele County (Salt Lake City: Daughters of Utah Pioneers, Tooele County, 1961), 497; “E. De La H. Horman,” Salt Lake Telegram, 28 Feb. 1945, 15.