A new book and interview claim Prince William’s fiery temper scares King Charles, with reports of shouting and a “Vesuvius” rage.
A new royal book is stirring fresh buzz with a startling claim: Prince William’s temper is so intense that it can “terrify” his father, King Charles III.
In an interview with Page Six published Friday, author Christopher Andersen discussed his latest work, *Kate! The Courage, Grace, and Power of the Woman Who Will be Queen*. Andersen’s comments also touched on William’s personality, and he suggested the prince is capable of explosive outbursts.
Andersen’s depiction is complicated rather than one-note. He said William is “kind and considerate to a fault” and, according to the author, never yells at his wife or children. But he also described William as someone who can shift into “bellowing tantrums” when frustration takes over.
The most specific part of the claim comes from Andersen’s account of workplace testimony from William’s childhood environment. He said a former Highgrove House employee reportedly witnessed multiple yelling matches, particularly when William became frustrated.
In that account, Andersen pointed to William’s delivery and presence, describing it as hard to forget. The author said William has a “huge, booming voice,” louder than his father’s, which means any shouting would stand out even to people who might not expect it.
Andersen then connected the dots to King Charles’s own temperament. He claimed Charles also has what he called a “Vesuvius temper,” implying the king isn’t completely untouched by fiery emotion.
Still, the book’s central punchline is that William’s version is portrayed as more severe.. Andersen said William’s temper is “much more brutal,” going so far as to “terrify” the king.. The implication. as presented in the interview. is that familial authority doesn’t necessarily cancel out the fear factor when emotions flare.
Meanwhile, the conversation around William’s alleged anger issues won’t be happening in a vacuum.. Fans have already heard claims from Prince Harry. including in his own book. about his experience being on the receiving end of William’s outbursts.. Bringing Charles into the picture adds a new layer to how people interpret the family dynamics described by the author.
Some readers may find the comparison especially notable: Andersen suggests William is both attentive and patient in day-to-day interactions. yet still capable of loud. intense escalation when he’s pushed.. It’s the contrast that makes the claims feel vivid. but it also raises the question of what triggers such behavior and whether stress. frustration. or particular circumstances are at the heart of the moments being described.
In royal life. where public image is tightly curated. stories like these often land with impact because they disrupt the stereotype of who is “quiet” and who is “loud.” The interview’s framing also leans into that idea. suggesting the louder bursts come from someone who is otherwise perceived as composed.
Prince William temper King Charles claims Christopher Andersen book royal family news Kate! book interview Highgrove House employee