When Jefferson Davis became president of the Confederacy, his wife, Varina Howell Davis, reluctantly became the First Lady. For this highly intelligent, acutely observant woman, loyalty did not come easily: she spent long years struggling to reconcile her societal duties to her personal beliefs. Raised in Mississippi but educated in Philadelphia, and a long-time resident of Washington, D.C., Mrs. Davis never felt at ease in Richmond. During the war...