Byron Theodore Sigmundsson was born in Spanish Fork, Utah on May 15, 1914. He had the name Byron T. Geslison in Utah.
Spouse: December 1, 1943 in Salt Lake City, Melva Ilene Holt b. October 10, 1918.
Children: 1. Melva Elaine b. October 12, 1944 2. Allen Sigmund b. May 10, 1947 3. Mary Kathleen b. February 27, 1950 4. David Byron b. November 27, 1953 5. Daniel Myron b. November 27, 1953 6. Earl Riggs b. March 3, 1946, foster son.
Byron completed grade school in 1931 and middle school in 1932 in Spanish Fork. After graduating from Brigham Young University in 1939, he also attended the university in the summers of 1940-41, 1954, 1956 and 1958. Byron taught for several years at Spanish Fork Seminary, but later became a salesman for well-known American companies. He held numerous positions within the Mormon Church in Utah and was a missionary in Germany and Austria 1935-38.