The Adventure of the Greek Interpreter Sherlock Holmes, far from being a one-off in terms of his powers of observation and deductive reasoning, in fact has an elder brother whose skills, or so Holmes claims, outstrip even his own. As a consequence of this, Watson becomes acquainted with the Diogenes Club and his friend's brother, Mycroft. Mycroft, as Watson learns, does not have the energy of his younger brother and as a consequence is incapable of using his great skills for detective work: In spite of his inertia, the elder Holmes has often delivered the correct answer to a problem that Sherlock has brought to him.
Minor Sherlock Holmes characters publication in the Eckert-edited "Myths for the Modern Age: Philip José Farmer's Wold Newton Universe" (MonkeyBrain Books, 2005), a collection of Wold Newton essays by Farmer and several other "post-Farmerian" contributors, authorised by Farmer as an extension of his Wold Newton mythos. He does not appear or is ever mentioned in any of the original stories of Sherlock Holmes and is not a creation of Doyle. Sherrinford Holmes is a proposed elder brother of Sherlock Holmes and Mycroft Holmes. His name is taken from early notes as one of those considered by Arthur Conan Doyle for his detective hero before