- California Doubling: Romania stands in for Merrie Old England.
- Dawson Casting: The real Philip of Cognac was born in the early 1180s, making him nineteen at the oldest. Stephen Moyer was thirty.
- Fake Brit: Frederick was played by Irish actor Del Synnott.
- Typecasting: This marked the first major role where Keira Knightley played a Spirited Young Lady.
- Underage Casting: It's not directly stated how old their characters are supposed to be, but Keira Knightley was only fifteen when cast opposite her love interest, played by the then-thirty-year-old Stephen Moyer. In the making-of special feature Moyer commented on how uncomfortable it was to shoot romantic scenes with his minor co-star, who was literally half his age at the time.
Trivia / Princess of Thieves