When Susan Mary Gritton was born on 15 September 1854, in Mercer, Kentucky, United States, her father, Merrit Marion Gritton, was 26 and her mother, Sarah Ann Riley, was 24. She married Walter Hales Maxey on 31 October 1872, in Monroe, Missouri, United States. They were the parents of at least 1 son and 2 daughters. She lived in Union Township, Monroe, Missouri, United States in 1860 and Woodlawn, Monroe, Missouri, United States in 1880. She died on 31 July 1886, in Missouri, United States, at the age of 31, and was buried in Bethel Cemetery, Holliday, Monroe, Missouri, United States.