Composer Richard Rodney Bennett based his later viola and orchestra "Elegy for Lady Caroline Lamb" (aka "Lady Caroline Lamb: Elegy for Viola and Orchestra") on part of his music score from this picture.
Film critic Pauline Kael once said of this movie featuring the Lord Byron character that "the film seems to have been made by a square Ken Russell". About thirteen years later, Russell actually directed a movie based on a Lord Byron story, the film being Gothic (1986). Gabriel Byrne played Byron in that picture.
The film's critical and commercial failure dissuaded Robert Bolt from ever directing again and - some say - also led to the break-up of his marriage to Sarah Miles four years later. (Bolt and Miles would actually remarry in 1988, the union lasting up until Bolt's death in 1995.)
It is common place nowadays for major films to have no opening credits save for the name of the film. In 1972, this was extremely rare. Lady Caroline Lamb (1972) is one of the few examples from that era.
Writer-director Robert Bolt originally wanted longtime collaborator David Lean to direct this project from the screenplay that he penned. The two had previously collaborated on Doctor Zhivago (1965), Ryan's Daughter (1970) and Lawrence of Arabia (1962). However, Lean was not interested in doing this film, so Bolt directed the picture himself.
The trivia item below may give away important plot points.
The film shows Lady Caroline dying "of a broken heart" as a young woman soon after her separation from her husband. In reality, she lived on into middle age, many years after the end of her marriage, and died more prosaically of influenza.