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.
Gabriel Fielding Gabriel Fielding (25 March 1916, Hexham, Northumberland, England – 27 November 1986, Bellevue, Washington), pen name of Alan Gabriel Barnsley, was a British novelist whose works include: "In the Time of Greenbloom", "The Birthday King", "Through Streets Broad and Narrow" and "The Women of Guinea Lane".