A royal biographer has warned that Markle is at risk of a 'take down plot'. Photo / Getty Images
Is Meghan and Harry's rising celebrity status a threat to Prince William? A royal biographer is claiming if Buckingham Palace courtiers become concerned, it could be curtains for Markle.
The Daily Mail reports royal biographer Anna Pasternak is warning that the Duchess of Sussex could be at risk of an inside "take-down plot" - something that's allegedly been orchestrated before when "difficult" women have joined the firm.
Pasternak, the author of Princess Diana's autobiography, has joined numerous royal commentators in pointing out similarities between Meghan and Wallis Simpson, the American socialite whose relationship with King Edward VIII led to his decision to relinquish his place on the throne.
As she releases her book, The Real Wallis Simpson: A New History of the American Divorcée Who Became the Duchess of Windsor, she warns that the same advisers Diana dubbed "the men in grey" could plot Markle's demise should they begin to perceive her "star" as a threat.
Pasternak revealed to the Sunday Express: "Meghan is like a grenade that's been thrown into this archaic system and there are explosions already going on which I think will continue.
"In a sense, Meghan has rejuvenated the spirit of Wallis and I hope people take the view of her as a kind, witty, loyal and dignified person who unfairly became the most vilified woman in the world."
Voicing her concern for the Sussexes, she explained: "I worry for Meghan and Harry. He's the people's prince as Edward was the people's king.
"I fear if Meghan and Harry's star rises too high that will be perceived as the courtiers Princess Diana called men in grey as a threat to the heir."
Pasternak suggested Markle should "toe the line and support the monarch", and refrain from trying to "set the agenda".
In December, royal expert Claudia Joseph warned that Markle was in line for backlash from the public as she appeared to be trying to modernise the monarchy.
Joseph revealed on the BBC's Victoria Derbyshire programme that, comparatively, Kate Middleton didn't receive such a barbed reaction when she joined the royal family, thanks largely to her "quiet nature".
In discussion with a panel featuring fashion designer Amal Fashanu and journalism professor Suzanneh Franks, the panel spoke about why Markle is prone to negative rumours which are constantly circulating, such as claims of disrespecting staff and disregarding friends who she no longer considers important.
While Fashanu pinned it on her ethnicity and history as a Hollywood star, Franks thought her more intensive approach to the role of as a new duchess was to blame for her attracting so much controversy.
Around the same time, Tom Bower, the unauthorised biographer of Prince Charles, appeared on Good Morning Britain. He noted Markle's determined nature, similar to Diana's.
He explained: "The problem is in my view that she is trying to be Diana.
"She's trying to adopt the new role, and the tragedy of the story is it'll end in the same way unless someone steps in from the Palace and says 'look this is the way it's done here'."
Before she became a royal, Markle spoke publicly about her views on feminism, politics and human rights, as well as being passionate about animals and their welfare.
This comes just before the Sussex's are set to leaving the palace for Windsor castle where their first child, due in April won't have to grow up "in a goldfish bowl".