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Prince William and Prince Harry reportedly had mood swings that rivaled their mother, Princess Diana. Charles and Diana’s fights have been well documented, and an unearthed biography claims that she passed that trait on to her sons. Not only did the brothers display “extreme mood swings” growing up, but their tempers often reminded Prince Charles of their mother.

Prince William Prince Harry
Prince William, Prince Harry, Prince Charles, Kate Middleton, Meghan Markle, and Camilla Parker Bowles | Phil Harris / POOL / AFP via Getty Images

A look at Princess Diana’s alleged mood swings

It is not a big secret that Diana and Charles’ marriage was less than perfect, even early on. In his 2018 book, Charles At Seventy: Thoughts, Hopes and Dreams, author Robert Jobson claims that the couple experienced intense fighting in the first few years of their marriage.

According to Express, Jobson revealed that Diana would often get angry with Charles over his friendship with Camilla Parker Bowles — who of course went on to become Prince William and Prince Harry’s stepmother.

Between the ups and downs in her marriage and constantly being in the royal spotlight, Jobson says that Diana experienced mood swings that left everyone on edge.

“She could be your best friend one minute and the next your worst enemy,” he wrote.

Diana apparently passed this trait on to both of her sons. Prince William and Prince Harry took most of their anger out on their father, especially following their mom’s tragic passing in 1997.

Inside Prince William and Prince Harry’s fiery natures

In his book, Jobson revealed that William and Harry experienced the same mood swings as their mother, though the Duke of Cambridge has better control over his temper. Both of them have also challenged Charles on occasion, which Jobson says “shocked” the Prince of Wales.

“The level of belligerence Charles has encountered from his sons has shocked the Prince, as both boys have, on occasion, challenged him,” Jobson shared. “[They displayed] alarming and irrational mood swings and temper[s] impossible to deal with.”

Jobson added that Prince William is not afraid to speak out against Charles. Growing up, Charles had to deal with William’s temper on the regular, which reminded him of his marriage to Princess Diana.

Other royal experts have echoed these reports. Katie Nicholl, for instance, wrote in her book, The Making of a Royal Romance, that William once lost his cool while playing a friendly party game in college.

William and Harry’s anger issues may have also played a role in their most recent feud, something royal experts believe would have greatly saddened Diana.

What would Princess Diana think about William and Harry’s feud?

Reports of a feud surfaced after Harry tied the knot with Meghan Markle. We still do not know what drove a wedge between the brothers, but Harry admitted last fall that they are currently on “different paths.”

The rift between Prince William and Prince Harry got worse after the Duke of Sussex decided to leave the monarchy. According to Marie Claire, William was “hurt” by Harry’s exit, which became official on March 31.

In light of the feud, royal photographer Jayne Fincher recently revealed that Diana “would be heartbroken” over what has happened between her sons.

“Diana] would be doing everything she could to try and solve it. She’d be doing everything to be the peacemaker,” Fincher stated.

Fincher noted that Diana would also be trying to make Meghan, Duchess of Sussex, and Kate Middleton make amends. Whether or not she would have been successful is anyone’s guess, but it is clear that things still aren’t right between Prince William and Prince Harry.

Prince William and Prince Harry’s icy encounter at Commonwealth Day

Before their exit from the monarchy became official, Harry and Meghan returned home for one last round of royal engagements. This includes a joint appearance at the Commonwealth Day service at Westminster Abbey, where they joined other senior members of the royal family.

Fans were anticipating a warm reunion between Prince William and Prince Harry at the event. But all the cameras caught was an icy exchange between the brothers, who barely acknowledged each other.

The Cambridges and the Sussexes were not a part of Queen Elizabeth’s procession for the service and were seated ahead of time. When William and Kate, Duchess of Cambridge, were shown to their seats, they gave a quick nod to Harry and Meghan before sitting down.

Harry and Meghan, who sat directly behind William and Kate, did not speak to them for the remainder of the service. Royal experts have described the encounter as “painful” and believe the royals missed an opportunity to show unity amid the negative reports.

Prince William and Prince Harry have not commented on the rumors surrounding their relationship. Harry and Meghan are currently in Los Angeles as the world deals with the coronavirus pandemic.