Which of these novels was not written by Robert Penn Warren?

The novels "At Heaven's Gate" (1943), "All the King's Men" (1946), and "Band of Angels" (1955) were written by Robert Penn Warren. "At Heaven’s Gate" is about violence, power, corruption, and honor. "All the King's Men" tells the story of charismatic populist governor Willie Stark and his political machinations. "Band of Angels" is the fictitious story of Amantha Starr, who looks white but is the daughter of a black slave, at time of the Civil War.

The 1960 novel "The Violent Bear It Away" was not written by Warren. This is a novel by the American author Flannery O'Connor. It is the second and final novel that she published.

The first chapter was originally published as "You Can't Be Any Poorer Than Dead" in the journal 'New World Writing'. The novel "The Violent Bear It Away" focuses directly on Francis Marion Tarwater, a fourteen-year-old boy. He is trying to escape the destiny his uncle has prescribed for him: the life of a prophet. Here, O'Connor's novel is another that is filled with Catholic themes and dark images, making it an excellent example of Southern Gothic literature.

In it, a series of struggles arise: Tarwater fights an internal battle against his innate faith and all the voices calling him to be a prophet. Meanwhile, his cousin, the schoolteacher Rayber, is trying to draw Tarwater into a more "reasonable" modern world. Both guys must wrestle with the legacy of dead relatives, while they both lay claim to Rayber's young son, Bishop's soul.