15 March 1887–23 June 1969 (Age 82)
Missouri, United States
Mary R. O'Neil was born on 15 March 1887, in Missouri, United States as the daughter of Patrick O'Neil and Sallie Jennings. She had at least 1 son and 1 daughter with Robert Edward Sherlock. She lived in Atchison, Atchison, Kansas, United States in 1920. She died on 23 June 1969, in Corpus Christi, Nueces, Texas, United States, at the age of 82.