When Marion Baker Teague was born on 9 October 1886, in Denton, Denton, Texas, United States, his father, John Bartley Teague, was 27 and his mother, Emma Alabama King, was 17. He married Beatrice Williamson on 7 August 1909, in Stephenville, Erath, Texas, United States. They were the parents of at least 1 daughter. He died on 29 November 1966, in Gregg, Texas, United States, at the age of 80, and was buried in Cow Creek, Erath, Texas, United States.