Chaplin was the most famous. He may have been the first real international superstar, something that only became possible when mass media like motion pictures made it possible for people all over the world to experience a performance without the performer actually having to be there. Keaton was next in terms of fame, though some say that, as a pure, physical comic, he was actually better than Chaplin. In terms of fame and popularity, Lloyd was third behind Chaplin and Keaton. There were other silent comics who were very famous at the time but whose stars have dimmed over the decades -- Fatty Arbuckle, for instance. Chaplin, Keaton and Lloyd, in that order, are still the big three of silent comedy.
Uncertain what is meant by Mrs Charles Chaplin. I do know its pretty common knowledge he was married several times. His first wife was Mildred Harris. She was known as Mrs Charles Chaplin. His 2nd wife was Lita Grey. She was born Lolita McKenna, part Mexican and part Irish. Since she was 16 and Chaplin was in his early 30s I wonder if she was the inspiration for Nabokov's novel "Lolita"
Oona Chaplin, born Oona O'Neill, the daughter of Eugene O'Neill.
Charlie Chaplin appeared (starred) in 28 movies between 1914 and 1961. He died in 1977 and posthumously credited in the 1983 film The Man in the Silk Hat which is a compilation of historic footage.
Charles Chaplin has 87 acting credits beginning with "Making a Living" (1914) and ending with "A Countess from Hong Kong" (1967).
Charlie Chaplin and his brother Sidney Chaplin played some short movies togheter back in 1916-1918, and Sidney Chaplin have also been in his movie "Limelight" from 1952.