Sigrid Undset was a highly acclaimed Norwegian novelist who was awarded the Nobel Prize in Literature in 1928. Her work is best known for its historically rich depictions of life in the Middle Ages, particularly in Scandinavia. Her most famous work, the trilogy Kristin Lavransdatter, explores the life of a woman in 14th-century Norway with deep psychological insight. A convert to Catholicism, her faith deeply influenced her later writings and she was an outspoken critic of Nazism during World War II.