Marie Brennan is the pen name of Bryn Neuenschwander, an American fantasy author and former anthropologist and folklorist. She studied archaeology and folklore at Harvard and did graduate work in cultural anthropology and folklore at Indiana University before leaving to write full-time.
She is best known for the Memoirs of Lady Trent, a Victorian-flavoured adventure series that begins with A Natural History of Dragons and was a Hugo finalist for Best Series. Her other work includes the Doppelganger duology (Warrior and Witch), the Onyx Court historical fantasies, more than ninety short stories, poetry, and role-playing game fiction.
With Alyc Helms she writes as M. A. Carrick, author of the Rook and Rose trilogy. She lives in the San Francisco Bay Area.
