Maybe Prince and Princess Michael could be jealous of the attention he gets. Since The former Princess of Wales, Duchess of Rothesay had a frosty relationship with Princess Michael, I wonder if Mrs. Kent has a grudge against Diana's sons.
Come on, this is just nonsense. They are so distantly related, it is almost no family anymore.
Lord Frederick Windsor can be seen as Harry's contemporary. Look how far they are related:
Prince Henry of Wales
= The Prince Charles, The Prince of Wales
x Lady Diana Spencer
The Prince Charles, The Prince of Wales
= Queen Elizabeth II
x Prince Philip of Greece and Denmark
Queen Elizabeth II
= King George VI
x Lady Elizabeth Bowes-Lyon
King George VI
= King George V
x Princess Mary of Teck
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King George V
x Princess Mary of Teck
= The Prince George, The Duke of Kent
The Prince George, The Duke of Kent
x Princess Marina of Greece and Denmark
= Prince Michael of Kent
Prince Michael of Kent
x Marie-Christine
Freiin von Reibnitz
= Lord Frederick Windsor
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With other words: the Austrian-Hungarian Baroness who happens to be the spouse to a grandson of Prince Harry's great-, great- grandfather should have developed a supportive role for this young adolescent?