When Mary Ann Gaylord was born on 12 February 1842, in Pierpont, Ashtabula, Ohio, United States, her father, William Henry Gaylord, was 30 and her mother, Jane Follett, was 25. She married Alfred Eugene Sweet on 28 November 1866, in Conneautville, Crawford, Pennsylvania, United States. They were the parents of at least 5 sons and 1 daughter. She lived in Russell Township, Russell, Kansas, United States in 1900 and Salt Lake City Ward 1, Salt Lake City, Salt Lake, Utah, United States in 1910. She died on 21 April 1934, in Salt Lake City, Salt Lake, Utah, United States, at the age of 92, and was buried in Mount Olivet Cemetery, Salt Lake City, Salt Lake, Utah, United States.