Claim: Eragon is a film starring Sienna Guillory.
Evidence: The film stars Ed Speleers in the title role as well as Jeremy Irons , Garrett Hedlund , Sienna Guillory , Robert Carlyle , John Malkovich , Djimon Hounsou , Alun Armstrong and Joss Stone , with Rachel Weisz as the voice of Saphira the dragon.