William Gillette is credited with the popular Holmes image
An American actor named Gillette played the Holmes character in about 1,300 performances. He used to wear a deerstalker cap on stage and preferred to smoke using a curved briar pipe to a straight one. The curved pipe was to help him say his lines with ease and for the audience to clearly see him. This instilled the belief that Holmes used to wear the hat when going to solve crimes and smoked a curved briar pipe.
Sherlock Holmes used to help the police
Despite his tense relationship with the police, Holmes never betrayed them. Instead, he always left clues for what he had deducted to lead them in the right direction as seen in 'The Adventure of Wisteria Lodge.'
Holmes did not completely trust Dr. Watson
To make Dr. Watson do what he saw necessary and not to lose a case because of Dr. Watson's emotions, Sherlock Holmes pretended to be dying of a deadly disease; this was to ensure Watson followed his instructions in 'The Adventure of the Dying Detective.'
Sherlock Holmes was originally meant to be called Sherrinford Holmes
Sir Arthur Conan Doyle, the creator of Sherlock Holmes, changed the name to Sherlock from Sherrinford supposedly because of a cricketer and Doyle himself being a cricketer. Doyle wrote 56 short stories and 4 long stories based on Sherlock Holmes.
Irene Adler was never Sherlock's lover
Despite being the only woman to have ever beaten Sherlock at his game, Sherlock never had a love interest in Irene Adler. Adler made an appearance in only one story 'A Scandal in Bohemia' and anytime she met Sherlock he was disguised as a drunkard and a clergyman.
Doyle killed Sherlock Holmes
Sir Arthur Conan Doyle wanted to move on to other projects that he introduced the character Moriarty and created a conflict that saw Sherlock dead. An outcry by fans forced Doyle to bring Sherlock back from the dead.