When Mary Thomas was born on 12 November 1805, in Tennessee, United States, her father, Alexander Thomas, was 45 and her mother, Mrs Alexander Thomas, was 17. She married Dubart Lee Bourland on 30 October 1821, in Franklin, Arkansas, United States. They were the parents of at least 7 sons and 7 daughters. She lived in White Oak Township, Franklin, Arkansas, United States in 1860 and Arkansas, United States in 1870. She died on 28 November 1881, in Franklin, Arkansas, United States, at the age of 76, and was buried in Duncan Cemetery, Ozark, Franklin, Arkansas, United States.