Character mistake: Merlin tells Arthur that Pendragon means Son Of the Dragon when it actually means Top Dragon or senior leader. Pen is Welsh for top not son.
The Last Legion (2007)
1 character mistake
Directed by: Doug Lefler
Starring: Colin Firth, Ben Kingsley, Peter Mullan, Aishwarya Rai Bachchan
Factual error: Hadrian's Wall is facing the wrong direction. The Wall was built to defend Britannia from the Picts in Scotland; therefore, its front should face north. However, as the Romans approach it from the south, they are greeted by the sheer face of the Wall.
Demetrius: You kept your armor after all these years?
Tertius: Ten years as a farmer gives you something worth fighting for. Twenty as a legionary teaches you to be ready for the day.
Demetrius: Good man.