Pseudonym the attempt was not entirely successful – and the two are still sometimes confused by booksellers. A pen name may be used specifically to hide the identity of the author, as in the case of exposé books about espionage or crime, or explicit erotic fiction. Some prolific authors adopt a pseudonym to disguise the extent of their published output, e.g. Stephen King writing as Richard Bachman. Co-authors may choose to publish under a collective pseudonym, e.g., P. J. Tracy and Perri O'Shaughnessy. Frederic Dannay and Manfred Lee used the name Ellery Queen as both a pen name for their collaborative
Pen name accepted by publishers and/or the public. Such is the case of Peru's Clarinda, whose work was published in the early 17th century. More often, women have adopted masculine pen names. This was common in the 19th century, when women were beginning to make inroads into literature but, it was felt, would not be taken as seriously by readers as male authors. For example, Mary Ann Evans wrote under the pen name George Eliot; and Amandine Aurore Lucile Dupin, Baronne Dudevant, used the pseudonym George Sand. Charlotte, Emily and Anne Brontë published under the names Currer, Ellis, and Acton Bell respectively.