Princess Diana had big dreams about her eldest son, Prince William.
The former Princess of Wales understood William was sensitive and wise. She thus wanted to protect her eldest.
Writing in his book, William and Catherine: The Monarchy's New Era: The Inside Story, royal expert Russell Myers explained: "Diana had always believed that William was a deep thinker, capable of assessing situations in ways that were wise beyond his years."
“Charles had been angered by Diana's refusal to toe the party line and leave William behind, just as he had been left behind when his own mother went on royal tours," the royal expert.
Myers continued: “In Diana's eyes, this wasn't consistent with [Charles's] description of his unhappy childhood, and was at odds with his ambition to create a different future for his children. Diana, for one, was not prepared to put the 'rules' of the Crown ahead of her own family's happiness."