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Aug 11, 2026

Princess Diana’s Brother Drops a Bombshell About King Charles — The Truth Had Nothing to Do With Camilla, and Royal Tensions Are Heating Up

Charles Spencer's new memoir has reopened the most painful week in modern royal history — not by returning to the familiar Charles-and-Camilla triangle, but by accusing the future King of cruelty in the days after Diana's death and by revealing a startling claim Diana herself allegedly made about her marriage. Buckingham Palace has already taken the unusual step of pushing back. Spencer has refused to retreat. The result is no longer just another Diana book; it is a direct fight over memory, motive and who gets to define what happened in 1997.

Read the full analytical breakdown below.

1. The Five Words That Forced Buckingham Palace to Break Its Silence

The central bombshell in Swan Song: Diana, My Sister is Spencer's account of a heated phone call in the days before Diana's funeral. Spencer says he objected to William, then 15, and Harry, then 12, walking behind their mother's coffin. During that dispute, he alleges the then-Prince Charles told him: "Rest assured, we'll forget her soon enough."

That is Spencer's recollection, not an independently verified transcript. But the allegation was serious enough to produce a response Buckingham Palace almost never gives to royal memoirs. The Palace said King Charles was mindful that the pain of "fraternal grief" can cloud reason, judgment and memory many years after a loss — a carefully worded way of disputing Spencer without entering a line-by-line fight over 1997.

Spencer then doubled down publicly, insisting he was telling the truth and remembered the call clearly. That matters because the dispute is now unusually direct: one side is not merely saying the other has a different interpretation; the Palace is questioning the reliability of Spencer's memory, while Spencer is saying his memory is exactly the point.

2. The Coffin Walk — Not Camilla — Is the Real Fault Line in Spencer's Story

The memoir's emotional center is the funeral procession. Spencer says he believed William and Harry were too young to be placed in one of the most watched public rituals of the century. He describes himself as resisting the plan and questioning whether the boys genuinely wanted to walk.

The walk itself is historical fact. What remains contested is how the decision was reached, how much pressure the boys felt and who pushed hardest for it. Spencer's version places responsibility much closer to Charles and the Palace than many earlier accounts did. The Palace has not accepted that interpretation.

This is why the new row is different from the familiar story of Charles, Diana and Camilla. Camilla is largely peripheral to the book's biggest current controversy. Spencer is focusing instead on Charles as a father, future monarch and decision-maker during the week after Diana died — a period in which private grief and public duty collided in front of the entire world.

Spencer also says Charles sounded unusually upbeat in the first calls after Diana's death and speculates in the memoir about why. That is another place where the book moves from recalled conversation into interpretation. A person's tone in shock or grief is difficult to reconstruct decades later, and Spencer cannot establish what Charles was thinking. The allegation matters because it shows how Spencer experienced those calls; it does not, by itself, establish Charles's emotional motive.

3. The 'Valet' Revelation Is Explosive — But It Is Diana's Allegation, Not Established Proof

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