Dr. Watson.
Sherlock Holmes' real name is Sherlock Holmes.
Sherlock & Holmes
.... Sherlock Holmes
The name of the movie was: "Sherlock Holmes". That's it.
It was Doctor Watson that assisted Sherlock Holmes. He is also his flatmate. He is the first person narrator of all but four stories in the Sherlock Holmes canon.
The Sherlock Holmes stories were usually narrated by Dr. John Watson, Sherlock Holmes' friend and companion. Watson was a doctor and war veteran who often chronicled the detective's cases from his perspective.
In the movie Sherlock Holmes, his companion Dr. Watson was a doctor and practiced his profession.
Doctor Watson would be considered a General Practitioner. He would refer some of his cases to specialists to have them treated. He served as a surgeon in the British Army until he was wounded.
Dr. Watson
Sherlock Holmes, he is never given a middle name. We can only speculate, and that, I think, is for the better.
Well, according to some, Conan Doyle got the name Holmes from Oliver Wendell Holmes and the name Sherlock from a famous violinist. There are many different guesses on how Sherlock Holmes was named, but this is the one I think is true.
The name of the detective created by Sir Arthur Conan Doyle is Sherlock Holmes.