When Mary Charloty Elwell was born on 29 May 1836, in Clark, Ohio, United States, her father, Israel Elwell, was 33 and her mother, Maria Mills, was 23. She married Robert Mudrick Miller on 6 November 1852, in Clark Township, Coshocton, Ohio, United States. They were the parents of at least 1 son and 2 daughters. She lived in Green Township, Clark, Ohio, United States in 1850 and Springfield City, Clark, Ohio, United States in 1860. She died on 27 September 1899, in Springfield Township, Clark, Ohio, United States, at the age of 63, and was buried in Ferncliff Cemetery, Springfield City, Clark, Ohio, United States.