Factual error: When Arthur marries Guinevere, the altar is decorated with yellow hybrid tea roses. Hybrid teas were not developed until the late 19th Century; yellow ones would not have been available in England until approximately the 1950s.
First Knight (1995)
1 factual error
Directed by: Jerry Zucker
Starring: Sean Connery, Richard Gere, Julia Ormond, Ben Cross
Revealing mistake: A horse gallops through a field and you can see a telephone pole.
Arthur: This is my last act as your King. Do not be afraid. All things change. I, Arthur of Camelot, command you now all... To fight! Fight! Fight like you've never fought before! Never surrender! Never surrender! Fight!
Trivia: Prince Malagant describes the oubliette where he imprisons Guinevere as just having "walls of air." This is a reference to the fate of Merlin, who was sealed away in a "prison of air."