Siege of the Saxons (1963)

Director: Nathan H. Juran
Cast: Janette Scott, Jerome Willis, John Gabriel, John Laurie, Mark Dignam, Ronald Howard, Ronald Lewis

Synopsis:

King Arthur learns one of his knights is plotting to take over and marry his daughter. After the King’s death, the Knight wishing to marry the princess is ordered by the great wizard Merlin to remove the sword from the scabbard and prove his right to the throne.