I think you have been following the wrong Thomas. The information I have been given (and much documentaion verifies) saya Thomas Haynes KILLEBREW was born in 1792 and married to Ann Harrell. He is the son of Kinchen KILLEBREW Sr. and the brother of Kinchen KILLEBREW Jr. Kinchen Sr. also had a son James and James had a son named Thomas .... your Thomas b. 1809; d. 1891 (Killebrew Cemetery near Dresden, Weakley Co. TN) married Martha Ann HENDERSON. Point of interest - Thomas was also married to Louisa Colley and they had a daughter Elizabeth Caroline. Elizabeth married Jasper Goodwin HENDERSON. I do not know the connection between Jasper and Martha Ann.