Even at the age of four, Prince Harry is known to have made a shocking outburst at his brother. A collection of royal experts spoke out about the many royal rifts in the palace during the Channel 5 documentary Prince Harry: The Troubled Prince.
In what is perceived by many a royal expert as the foreshadowing of their complicated future relationship, Harry began to pick up on the reality of their very different paths when he was just a child.
The young royals were travelling from London to Gloucester during a weekend over thirty years ago when the two boys started squabbling.
The incident was overheard by Ken Wharfe, a long-serving protection officer to the royals, who was left stunned by a young Prince Harry’s outburst.
Mr Wharfe said: “Diana would always take the two boys to High Grove in Gloucestershire.
“On this particular occasion Diana was driving, I was sat in the front, William and Harry in the back.
“They’d clearly got off to a bad start because they were arguing before we’d even left.”
Mr Wharfe described how the young princes’ nanny had to be referee as they boys argued in the back seats of the car.
He said: “Harry out of nowhere said: ‘William, one day you’ll be king, I won’t, it doesn’t matter therefore I can do what I like’.”
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Much to Princess Diana’s dismay, the boys are said to have been treated differently by the palace when growing up.
The documentary even saw claims that the Queen Mother formed a far closer bond with Prince William.
Journalist Richard Kay said: “Prince Charles shared Diana’s concerns about making sure the boys shared things in their early years.”
“But certainly more senior members of the Royal Family in private were saying: ‘This is nonsense. William is the future.
“‘ All our efforts must go into educating William’.
“It was William the Queen would invite for lessons in kingship when he was at Eton and she was at Windsor Castle.”
Royal biographer Angela Lewin added: “He was always less than his brother.”
“The late Queen Mother would always invite Prince William over for tea and talk to him about his future and not invite Prince Harry.”
Richard Kay agreed, adding: “The Queen Mother always made sure Prince William was seated in a prominent seat next to her and Harry never was.”
Moreover, the Queen Mother reportedly left Harry more money when she died in 2002.
When she died, she left an estimated £14 million from her estate to her great-grandsons.
The decision was not down to personal preference, rather that William would benefit financially from becoming King.