First ladies aren't always presidential spouses. In fact, two early uses of the title refer to the beautiful, popular Harriet Lane, niece of James Buchanan, the only lifelong bachelor president. She was an able hostess who, not long before the Civil War, arranged for Northern and Southern guests to be seated apart at a White House function in order to keep the peace. Harper's Weekly called her "Our Lady of the White House," and Frank Leslie's Illustrated Newspaper captioned Lane's picture thusly: "The subject of our illustration . . . may be justly termed the first lady in the land."