One of the most prominent royals featured in the film is that of Princess Mary, Countess of Harewood, portrayed by Peaky Blinders actress Kate Phillips. READ MORE: ...

Her Royal Highness Princess Mary, Princess Royal and Countess of Harewood (1897–1965), however, the only daughter of King George V and an aunt of the present queen, ...

And while the film takes place in 1927, Princess Mary didn't actually move in to Harewood House until 1929, after her father-in-law passed away. (A fact that is very quickly addressed in the story.) ...