When Onie Ann Wallin was born on 2 May 1880, in Benton, Polk, Tennessee, United States, her father, James Madison Wallin, was 33 and her mother, Eglantine McClary, was 33. She had at least 8 sons and 3 daughters with Walter Thomas Watson. She lived in Justice Precinct 2, San Saba, Texas, United States in 1930 and Justice Precinct 1, Swisher, Texas, United States in 1940. She died on 4 May 1975, at the age of 95, and was buried in Plainview, Haskell, Texas, United States.