Blount Mansion is a National Historic Landmark. William Blount was a signer of the U.S. Constitution when George Washington appointed him Governor of the Southwest Territory. Blount Mansion, his 1792 home and Capitol, is a little house with BIG STORIES to tell. Come share in the stories of the U.S. Constitution, statehood, impeachment, treason, royal bedbugs, and 10 African Americans who built and ran a mansion.