When Hannah L Slyter was born on 20 March 1822, in Russell, St. Lawrence, New York, United States, her father, Samuel Slyter, was 35 and her mother, Margaret Brown, was 31. She married James J. Cooper in 1841, in Lorain, Ohio, United States. They were the parents of at least 4 sons and 2 daughters. She lived in Fawn River, St. Joseph, Michigan, United States in 1850 and Kansas, United States in 1870. She died on 7 March 1897, in Mulberry, Crawford, Kansas, United States, at the age of 74, and was buried in Mulberry, Crawford, Kansas, United States.
Probably an altered form of Sluyter .