Holmes was the third and youngest son of Violet Sherrinford and Captain Siger Holmes, the younger brother of Mycroft (b. 1848) and Marchmont Holmes (1845). When Sherlock was two, his eldest brother received a letter of invitation to the Hogwarts School of Witchcraft and Wizardry, though Sherlock and Mycroft did not. Sometime after 1863, Marchmont died mysteriously, and Sherlock witnessed Hogwarts professor Phineas Nigellus Black leaving the scene. Sherlock and Mycroft were the only attendants at Marchmont's funeral.
In "Watson's Task" and "The Ministry's Case"
Using ratiocination, he deduced the existence of magic numerous times, and was obliviated each time by agents of the British Ministry of Magic. Eventually, on the orders of Minister Diggory, squib John Hamish Watson was assigned to partner with Holmes and formally introduce him to the wizarding world. Along with Auror Artis Lupin, Holmes and Watson investigated the "Whitechapel murders."
Holmes retired to a bee farm on the Sussex Downs in 1903, where he took up the hobby of bee-keeping, eventually producing a "Practical Handbook of Bee Culture, with some Observations upon the Segregation of the Queen."
- In the Arthur Conan Doyle canon:
- A Study in Scarlet
- The Sign of the Four
- The Adventures of Sherlock Holmes
- The Memoirs of Sherlock Holmes
- The Hounds of the Baskervilles
- The Return of Sherlock Holmes
- The Valley of Fear
- His Last Bow
- The Case-Book of Sherlock Holmes
- In the Michael Chabon novel:
- The Final Solution (1944)
- In the Harry Potterverse: