William Mycroft is a suggestion that Arthur Conan Doyle derived the name of Mycroft the older brother of Sherlock Holmes from William Mycroft. Conan Doyle was a first-class cricketer who later played for MCC and had a respect for fast bowlers. Mycroft played his last first-class match for MCC in 1886. He umpired four first-class matches before his retirement and later umpired two more during the 1891 season. He died of influenza at the age of 53 in Derby. Mycroft's half-brother, Thomas, played for Derbyshire between 1877 and 1885. William Mycroft William Mycroft (1 February 1841 – 19 June 1894) was an
Mycroft Holmes [...] the most indispensable man in the country." He apparently serves as a sort of human computer, as stated in "The Bruce-Partington Plans": Mycroft appears or is mentioned in four stories by Doyle: "The Greek Interpreter", "The Final Problem", "The Empty House" and "The Bruce-Partington Plans". While he does occasionally exert himself in these stories on behalf of his brother, he on the whole remains a sedentary problem-solver, providing solutions based on seemingly no evidence and trusting Sherlock to handle any of the practical details. In fact, Mycroft's own lack of practicality is a severe handicap despite his inductive talents: