When J. Bryan "J.B." Arant was born on 27 June 1904, in Llano, Texas, United States, his father, Henry Walker Arant, was 37 and his mother, Harriet Elizabeth "Lizzie" Marr, was 32. He married Zeda Margaret Bragg on 23 October 1926, in Montrose, Montrose, Colorado, United States. They were the parents of at least 2 sons and 1 daughter. He lived in Grand Junction, Mesa, Colorado, United States in 1940. He died on 25 February 1990, in Palisade, Mesa, Colorado, United States, at the age of 85, and was buried in Grand Junction, Mesa, Colorado, United States.