Karen Blixen and Julian Barnes both used pseudonyms in their works.
Karen Blixen Baroness Karen Christenze von Blixen-Finecke (née Dinesen; 17 April 1885 – 7 September 1962) was a Danish author who wrote works in Danish and English. She is best known under her pen names Isak Dinesen, used in English-speaking countries, and Tania Blixen, used in German-speaking countries. She also published works using the aliases Osceola and Pierre Andrézel.
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".