County Named, 1810. For Gen. Richard Butler, b. 1743, Ireland. Came to America, 1760. Officer during Revolutionary War. Indian agent, 1784; Supt. Indian Affairs for Northern Dist., 1785. With George Rogers Clark negotiated Indian treaty, 1786. As Maj. Gen., second in command, was killed on St. Clair's expedition against Indians into Ohio country, 1791. Butler out of Logan, Ohio counties.