Prince Philip

The Duchess of Edinburgh shared a rare inside story from the Scottish castle in a new BBC Radio interview.

Royal biographer Gyles Brandreth spoke to the late Duke about his feelings on one of his in-laws.

Gyles Brandreth revealed the late Duke of Edinburgh's feelings about an incident that "saddened' Queen Elizabeth.

Lady Myra Butter explained how the late Queen navigated her seven-decade-long relationship.

Each meal was simple, and often seasonal, without pomp and ceremony.

The late duke told author Gyles Brandreth that one behavior “simply isn’t on.”

Afterwards, he would reportedly "be a different man."

"Then came the knock-out blow that had left the princess sobbing."

"Royals understand other royals," the former Danish queen shared.

"They were taken aback by the scale of what they had unleashed."

"They hadn't an idea of what being royal really meant."

"Harry had previously spoken to his grandfather about death..."

One source "remembers Philip screaming abuse at his son when he made some minor mistake."

Gyles Brandreth wrote that King Charles and Queen Camilla actually "have more in common" than the late Queen and Duke of Edinburgh.

"Charles, unlike his feisty sister Anne, did not have the personality to stand up to his father."

"He is someone who doesn't take easily to compliments..."

Gyles Brandreth says that he thought one royal "was irreplaceable" until he saw how Queen Camilla operated.

"They never completely softened with old age."