Joab Lawler moved with his father to Tennessee in 1815 and from there to the Mississippi Territory. He attended public schools, studied theology and got a license as a preacher. Then he moved in 1820 after Mardi (Alabama ) and went to his work as a preacher after.
Lawler also pursued a political career. He was 1826-1831 Member of the House of Representatives from Alabama. Afterwards he worked in 1831 and 1832 in the Senate of Alabama. He received 1832-1835 public funds for the Coosa area. During this time he worked as treasurer ( treasurer ) of the University of Alabama at Tuscaloosa 1833-1836. He was elected as a Jacksonian to the 24th U.S. Congress. After that, he was re-elected as a Whig to the 25th U.S. Congress. Lawler was in the U.S. House of Representatives on 4 March 1835 until his death in 1838 in Washington, DC active. He was buried in the Congressional Cemetery.