When Sigrid (Kathryn Hohut) discusses ancient monarchs, she states that one thing she despises about monarchies is they behead their wives. She uses Marie Antoinette as an example for her argument. However, King Louis XVI didn't behead his queen, the two were imprisoned during the French Revolution and both were executed by guillotine.
Cell phone shows March date, not December.
Stephen Huszar is 40 years old, yet the actors playing his parents look like contemporaries to the actor. Pip Dwyer (The Queen) doesn't list her birthday, but looks to be similarly aged to Huszar and Simon Phillips (The King), who is listed as aged 44, a mere 4 years Huszar's senior.