Angus Macfayden is playing a 32 year old in the film. At the time of filming he was actually older than Robert the Bruce was when he died at the age of 54.
Mhairi Calvey, who plays Robert the Bruce's wife Elizabeth de Bugh, previously played the younger version of Murron, William Wallace's wife, in Braveheart (1995).
The film takes place after Robert the Bruce was crowned King of Scotland following William Wallace's torture and execution.
Filmed mainly in the US state of Montana for economic reasons.