"THE FIRST LADY"
Describing the wife of the president as the "first lady" dates back to Zachary Taylor's 1849 description of Dolley Madison as "our First Lady for half a century." Even now, the title is colloquial, and the position of presidential wife (or husband) has no constitutional basis and carries no formal power. Apropos of nothing, Theodore Roosevelt's second wife's middle name was Kermit; in her honor, one assumes, his son, grandson, and great-grandson were also named Kermit. (The name is, apparently, Gaelic for "without envy.")
Samuel Johnson (1709-84)