Mary Tomlinson, professionally known as Marjorie Main, was an American character actress and singer of the Classical Hollywood period, best known as a Metro-Goldwyn-Mayer contract player in the 1940s and 1950s, and for her role as Ma Kettle in 10 Ma and Pa Kettle movies. Main started her career in vaudeville and theatre, and appeared in film classics, such as Dead End (1937), The Women (1939), Dark Command (1940), The Shepherd of the Hills (1941), Meet Me in St. Louis (1944), and Friendly Persuasion (1956).

Meet Me in St. Louis is a 1944 American Christmas musical film made by Metro-Goldwyn-Mayer. Divided into a series of seasonal vignettes, starting with Summer 1903, it relates the story of a year in the life of the Smith family in St. Louis leading up to the opening of the Louisiana Purchase Exposition in the spring of 1904. The film stars Judy Garland, Margaret O'Brien, Mary Astor, Lucille Bremer, Tom Drake, Leon Ames, Marjorie Main, June Lockhart and Joan Carroll.