Frances Parkinson Keyes was an American author who wrote about her life as the wife of a U.S. Senator and novels set in New England, Louisiana, and Europe. A convert to Roman Catholicism, her later works frequently featured Catholic themes and beliefs. Her last name rhymes with "skies," not "keys."
If you liked Mark Twain’s Personal Recollections of Joan of Arc, you’ll probably like Frances Parkinson Keyes’ biography of the other great French girl saint, Therese of Lisieux.