17 February 1931–22 July 2009 (Age 78)
Garfield, Salt Lake, Utah, United States
When Keith Warren Daybell was born on 17 February 1931, in Garfield, Salt Lake, Utah, United States, his father, Warren Daybell, was 29 and his mother, Thelma Elizabeth Leak, was 23. He married Galyn E. Cunningham on 9 May 1952, in Salt Lake City, Salt Lake, Utah, United States. They were the parents of at least 1 daughter. He lived in California, United States in 1971 and Hayward, Mariposa, California, United States in 1994. He died on 22 July 2009, in Hayward, Alameda, California, United States, at the age of 78, and was buried in Wasatch Lawn Memorial Park, East Millcreek, Salt Lake, Utah, United States.