Barnard (Barney) H. Seegmiller was born on August 29, 1915 in St. George, Utah to Hela and Mary Ann Platt Seegmiller. He married Deloris Sullivan on March 27, 1946 in the St. George Temple.
Barney was raised in St. George and graduated from Dixie Junior College in 1936. He was also involved with the Institute of Continued Learning at Dixie State College.
During World War II, Barney was a member of the Army Air Corps and served in the 57th Bomb Wing in North Africa, Italy, and Corsica. His memoirs have been published in a war journal.
Barney's main occupation was ranching on Seegmiller Mountain in the Arizona Strip. He was also employed as the Washington County Assessor, as a realtor, and was part owner of the Dixie Livestock Auction. He was a member of the St. George City Council, Washington County Sheriff's Posse, and Lion's Club.
In 1999, Barney and Deloris generously donated 33 acres of family farmland in the Washington Fields to the City of St. George to create the Hela Seegmiller Historic Farm, intended to provide a pioneer farm-life experience.
He died on June 15, 2010 in St. George, Utah.