James Arness was a person.
James Arness -LRB- May 26 , 1923 -- June 3 , 2011 -RRB- was an American actor , best known for portraying Marshal Matt Dillon for 20 years in the television series Gunsmoke.
An actor -LRB- often actress for females ; see terminology -RRB- is a person who portrays a character in a performance.
