When Nettie Lou Koonce was born on 18 June 1890, in Panola, Texas, United States, her father, James Carroll Koonce, was 24 and her mother, Ida Lou Moore, was 19. She married John Willey Miller on 1 April 1906, in Panola, Texas, United States. They were the parents of at least 1 son and 1 daughter. She lived in Justice Precinct 7, Panola, Texas, United States in 1930 and Justice Precinct 1, Panola, Texas, United States in 1940. She died on 20 February 1973, in Carthage, Panola, Texas, United States, at the age of 82, and was buried in Panola, Texas, United States.