When it broke that JK Rowling was the writer behind The Cuckoo’s Calling using the pseudonym of Robert Galbraith, the internet exploded with the news. A previous blog post addressed how it might challenge what it means for an author to be discovered. But there’s also a question of a writer’s identity when using a pseudonym. Using a pen name is not that uncommon. There’s a long list of famous authors and their pseudonyms from classic authors like George Eliot (actually Mary Ann Evans) to more modern uses like the author of the Jason Bourne series Robert Ludlum who also wrote under the names Jonathan Ryder and Michael Shepherd. A few people have claimed the choice was a gender issue, but in this day…