Mineral Mound was the home of Willis B. Machen (1810-93), who served in the Kentucky Constitutional Convention in 1849, the Kentucky Senate in 1853, the Kentucky House of Representatives from 1855 to 1861, the Confederate Congress from 1861 to 1865, and the US Senate from 1872 to 1873. He was one of only a few men who served in both the CSA and US Congresses. His granddaughter, Zelda Sayre, was the wife of F. Scott Fitzgerald. Mineral Mound was named for a mineral spring on the farm. During the Civil War, the home flew the Confederate flag and was damaged by Union gunboats from the Cumberland River as a result. R. S. Mason, a prominent Lyon County businessman, owned the estate from 1917 until it burned in 1947.