The queen's only daughter, Princess Anne, will have a richer arc in the coming season. Anne, played by Erin Doherty in Season 3, was originally second-in-line for the throne. According to People, she is "a frugal, hard-working, tough-as-nails royal." Known for her prize horseback riding skills, Anne inherited the queen's passion for horses so much so that she skipped university in order to advance her equestrian career, E! News reported. 

What can we expect from Princess Anne this season — other than refreshing spunk? The Crown will likely include her wedding to champion rider Mark Phillips in 1973. At 23, she was the first child of the queen to get married. She was also the first royal to compete in the Olympics. She was on the British equestrian team at the 1976 Montreal Olympics. In the second day of her event, she fell off her horse, suffered a concussion, but got back up and finished the course anyway, according to The New York Times.

We may also see her 1974 attempted kidnapping. According to E! News, the perpetrator ordered Anne out of the car, to which she allegedly replied, "Bloody likely."