When Sarah Elizabeth Leeper was born on 23 December 1862, in Gasconade, Missouri, United States, her father, Jesse Leeper, was 39 and her mother, Sarah Ann Morgan, was 25. She married John Wesley Allen on 12 August 1878, in Adams, Illinois, United States. They were the parents of at least 2 sons and 1 daughter. She lived in Ellington Township, Adams, Illinois, United States in 1900 and Honey Creek Township, Adams, Illinois, United States in 1920. She died on 11 March 1953, in Quincy, Adams, Illinois, United States, at the age of 90, and was buried in Home Cemetery, Fowler, Adams, Illinois, United States.