Brigham Young Peterson was born 17 April 1879 in Brigham City, Arizona. His parents were Marcor Hansen Peterson (1842-1937) and Anna Amalia Andersen (1853-1938). He married Stella Jarvis (1882-1974), daughter of Charles Godrey DeFriez Jarvis (1855-1919) and Margaret Jarvis (1857-1934) 1 June 1903 in Salt Lake City, Utah. They had twelve children. Brigham died in 1951 in St. John, Arizona. Ancestors, descendants and relatives lived mainly in Denmark, England and Arizona.