John Watson

Dr. John Hamish Watson is a fictional character and one of the two main protagonists of the television series, Sherlock

Trivia

 * John is based on Doctor John Watson from the original Sherlock Holmes novels by Sir Arthur Conan Doyle.
 * John is also one of Martin Freeman's middle names.
 * He has an older sister named Harriet, who is a drug addict and tries to quit drinking.
 * In the beginning of the series, John is in his late thirties.
 * His and Mary's daughter, Rosie, was named after her, whose birth name was also Rosamund Mary.
 * One of the very few individuals not intimidated by Mycroft Holmes or Rumplestiltskin.

Behind the Scenes

 * John is portrayed by Martin Freeman and appears in all episodes of all four seasons, including the short, "Many Happy Returns" and the special, The Abominable Bride.