When Isabelle Butte was born on 6 October 1893, in Sandy, Salt Lake, Utah Territory, United States, her father, John Butte, was 39 and her mother, Annie Briggs, was 33. She married Charles Edward Mowrey on 14 August 1918, in Farmington, Davis, Utah Territory, United States. They were the parents of at least 2 daughters. She lived in Salt Lake City, Salt Lake, Utah, United States in 1930 and Salt Lake City Ward 1, Salt Lake City, Salt Lake, Utah, United States in 1940. She died on 7 October 1974, in Copperton, Salt Lake, Utah, United States, at the age of 81, and was buried in Salt Lake City, Salt Lake, Utah, United States.