(Sibert) (1873-1947) US novelist and short-story writer. Her novels frequently explore life in the pioneer West, both in her own time and in past eras; for example, O Pioneers! 1913 and My Antonia 1918, and A Lost Lady 1923. Death Comes for the Archbishop 1927 is a celebration of the spiritual pioneering of the Catholic Church in New Mexico. She also wrote poetry and essays on fiction.