When Mary Augusta Mix was born in 1842, in Genesee, New York, United States, her father, Leander Mix, was 27 and her mother, Mary Welthy Bennett, was 20. She married Maro F. Stone on 13 May 1861, in Cuyahoga, Ohio, United States. They were the parents of at least 1 son and 2 daughters. She lived in Cleveland, Cuyahoga, Ohio, United States in 1860 and Cambridge, Guernsey, Ohio, United States in 1870. She died in 1874, at the age of 32.