Karen Blixen and Julian Barnes both used pseudonyms in their works.
Julian Barnes Julian Patrick Barnes (born 19 January 1946) is an English writer. Barnes won the Man Booker Prize for his book "The Sense of an Ending" (2011), and three of his earlier books had been shortlisted for the Booker Prize: "Flaubert's Parrot" (1984), "England, England" (1998), and "Arthur & George" (2005). He has also written crime fiction under the pseudonym Dan Kavanagh. In addition to novels, Barnes has published collections of essays and short stories.
Millennium (novel series) Millennium is a series of best-selling and award-winning Swedish crime novels, created by Stieg Larsson. The two primary characters in the saga are Lisbeth Salander, a woman in her twenties with a photographic memory and poor social skills, and Mikael Blomkvist, an investigative journalist and publisher of a magazine called "Millennium".