When Mary Emma Baldwin was born on 23 December 1864, in Fish Creek, Polk, Georgia, United States, her father, John Thomas Lafayette Baldwin, was 26 and her mother, Adeline Eliza Atkins, was 18. She married Peter Agan about 1885, in Fish Creek, Polk, Georgia, United States. They were the parents of at least 2 daughters. She lived in Polk, Georgia, United States in 1870. She died on 10 July 1935, in Atlanta, Fulton, Georgia, United States, at the age of 70, and was buried in Cedartown, Polk, Georgia, United States.