Chatto is the son of Princess Margaret's daughter, Lady Sarah Chatto, and is 26th in line to the throne.
Despite sitting well behind Prince Charles, Prince William and Prince George in the running for the crown, he famously attended the Duke and Duchess of Sussex's big day.
Princess Margaret passed away in 2002, so The Crown sure to prove interesting viewing for her grandson with his family history being played out on the small screen.
In season three, Helena Bonham Carter stepped into the shoes of Margaret - a role previously held by Vanessa Kirby.
The third installment of the series saw the late royal reign the script once more, as she navigated the highs and lows of married life.
Following her whirlwind romance with divorcé Peter Townsend, Princess Margaret wed photographer Anthony Armstrong-Jones but their romance ended 12 years later amid scandal and infidelity on both sides.
Although Chatto isn't the only royal fascinated by his family's past, as Princess Eugenie is also the proud owner of a Netflix account.
"It is filmed beautifully," she said. "The music is wonderful, the story is beautiful. You feel very proud to watch it. I can't speak for everyone, but that's how I felt when I watched it."