Marshall County is a county located in the U.S. state of Tennessee. Its county seat is Lewisburg. As of 2000, the population was 26,767. More state governors have hailed from Marshall County than any other county in Tennessee, giving the county the nickname "Mother of Governors. " Marshall County also is home of the Tennessee Walking Horse Breeders' and Exhibitors' Association. Another native of Marshall County is the fainting goat.