The term 'Lanchester of Films' refers to the British actress and singer Elsa Lanchester, who was best known for her roles in horror films such as The Bride of Frankenstein (1935) and The Raven (1935). She also appeared in comedies such as My Man Godfrey (1936) and Witness for the Prosecution (1957). Lanchester was a versatile performer, appearing in both silent and sound films. Her career spanned over five decades, from the 1920s to the 1970s.