Literary pseudonyms are fictitious names used by authors to conceal their true identities. Writers often adopt these pen names for various reasons, such as privacy, marketing, or to separate different genres of their work. For example, Samuel Langhorne Clemens is better known by his pseudonym, Mark Twain, under which he published many famous novels. Using a pseudonym can also help authors avoid bias or preconceived notions about their work based on their real names. Some writers, like Joanne Rowling, chose pen names like J.K. Rowling to appeal to a broader audience or to create a distinct brand for their writing.