A memoir released nearly three decades after Princess Diana’s death has done what few royal books manage: it forced Buckingham Palace into a public rebuttal. As Charles Spencer’s account of his sister’s final years spreads across headlines worldwide, reports now suggest Prince William and Princess Kate “want to step in” after Princess Diana’s brother’s book rocks royals, hoping to steady a family reeling from renewed grief and public scrutiny.
The timing could hardly be more sensitive. Spencer’s memoir, “Swan Song: Diana, My Sister,” landed around September 22, 2026, reopening wounds many assumed had long since closed [1] [8] [10].
Key Takeaways
- Charles Spencer’s memoir “Swan Song: Diana, My Sister” was published around September 22, 2026, nearly 30 years after Diana’s death [1] [8].
- Spencer alleges King Charles III reacted with unexpected calm, even relief, on the night Diana died [1] [7] [13].
- The book claims palace aides pressured William and Harry, then just 15 and 12, to walk behind their mother’s coffin against Spencer’s wishes [1] [8] [9].
- Buckingham Palace issued a rare, sharply worded statement disputing Spencer’s account [3] [14] [15].
- Prince William and Princess Kate are reportedly weighing a more visible, stabilizing role as the controversy continues to unfold.
Why Prince William and Princess Kate ‘Want to Step In’ After Princess Diana’s Brother’s Book Rocks Royals
Royal commentators note that the couple has historically avoided wading into disputes involving Diana’s legacy, preferring quiet distance over public engagement. But the scale of this controversy appears to have shifted that calculus. Spencer, now 62, has described his motivation as duty rather than provocation, calling himself “an eyewitness to history” obligated to record what he witnessed during Diana’s marriage and the days surrounding her death [1] [8] [12].
That framing has not softened the impact. The memoir revisits some of the most painful chapters in modern royal history, and its release has triggered exactly the kind of institutional anxiety that tends to draw William and Kate toward a steadying, behind-the-scenes role.
The Allegations Fueling the Firestorm
Several outlets report that Spencer’s book contains explosive claims about King Charles III’s reaction to Diana’s death in 1997. According to these accounts, the then-Prince Charles appeared “giddily elated” the night Diana died and later remarked that “we’ll forget her soon enough” [1] [7] [13].
Perhaps more damaging to public sentiment is the claim that palace aides forced Princes William and Harry, then just 15 and 12 years old, to walk behind their mother’s coffin during the funeral procession. Spencer says he objected at the time, insisting Diana would never have wanted her young sons paraded through such a moment. His concerns, he writes, were overruled [1] [8] [9] [13].
These are not minor footnotes. They strike at questions of parental judgment, institutional coldness, and whether two grieving boys were treated as symbols rather than sons.
Buckingham Palace’s Unusually Forceful Response
What makes this episode stand out is not just the allegations themselves but the palace’s reaction. Buckingham Palace issued a statement rejecting Spencer’s version of events, one royal watchers describe as unusually direct. The statement pointedly suggested that “the pain of fraternal grief can cloud reason, affect judgment and colour memory” [3] [14] [15].
Analysts have compared the tone to Queen Elizabeth II’s famous “recollections may vary” remark, widely seen at the time as one of the monarchy’s sharpest public rebukes. That this current statement is being placed in the same category signals how seriously the palace views the reputational stakes [3] [14].
A Family Under Renewed Pressure
Reuters and other major outlets have framed the memoir as reopening “one of the most damaging periods in the royal family’s modern history” [1] [4] [8] [10]. Coverage across NBC News and other publications describes a broader “war of words” between King Charles’s camp and Spencer, with public sympathy sharply divided [4] [6] [10].
For William and Kate, the situation presents a delicate balancing act:
- Protecting their father, the King, amid direct personal criticism
- Acknowledging the legitimate emotional weight of Diana’s story
- Avoiding actions that could be read as taking sides publicly
- Managing their own children’s growing awareness of family history
Sources suggest the couple is exploring quiet diplomatic gestures rather than public statements, consistent with their established pattern of measured, low-drama crisis management.
What Happens Next
Whether Prince William and Princess Kate ‘want to step in’ after Princess Diana’s brother’s book rocks royals in a formal capacity remains uncertain. Palace insiders typically favor de-escalation over confrontation, and any intervention is likely to be understated rather than dramatic.
Still, the memoir’s commercial success and continued media coverage suggest the story is far from finished. As long as the book remains a talking point, pressure on senior royals to respond, directly or indirectly, will likely persist.
Conclusion
Charles Spencer’s memoir has done more than revisit old grief. It has reignited hard questions about accountability, memory, and how the royal family handles its most painful history. With Buckingham Palace already on the defensive, attention now turns to whether William and Kate will move from quiet concern to active involvement. Readers following this story should watch for official palace statements and verified reporting from established outlets, rather than speculation, as the situation continues to develop.
References
[1] Princess Dianas Brother Eyewitness History Sparks Royal Ruckus 2026 09 22 – https://www.reuters.com/world/uk/princess-dianas-brother-eyewitness-history-sparks-royal-ruckus-2026-09-22/ [3] Princess Diana Book Charles Spencer Intl Gbr – https://www.cnn.com/2026/09/17/uk/princess-diana-book-charles-spencer-intl-gbr [4] Princess Diana Brother Memoir On Sale King Charles Response Crash Rcna598977 – https://www.nbcnews.com/world/united-kingdom/princess-diana-brother-memoir-on-sale-king-charles-response-crash-rcna598977 [6] Bombshells From Princess Dianas Brothers Shock Memoir Revealed – https://www.thedailybeast.com/bombshells-from-princess-dianas-brothers-shock-memoir-revealed/ [7] Princess Diana King Charles Forgotten Book Claims Intl – https://www.cnn.com/2026/09/16/uk/princess-diana-king-charles-forgotten-book-claims-intl [8] What Princess Dianas Brother Charles Spencer Says New Book 2026 09 22 – https://www.reuters.com/world/uk/what-princess-dianas-brother-charles-spencer-says-new-book-2026-09-22/ [9] Bellowing Buffoon King Charles Locked In Savage War Of Words With Princess Dianas Brother – https://pagesix.com/2026/09/17/royal-family/bellowing-buffoon-king-charles-locked-in-savage-war-of-words-with-princess-dianas-brother/ [10] Princess Diana Brother Book – https://www.npr.org/2026/09/22/g-s1-144505/princess-diana-brother-book