Prince William is tangled up in another royal family feud after his uncle — Princess Diana’s brother, Charles Spencer, 9th Earl Spencer — reopened deep emotional wounds in his bombshell new book. “With Prince William, there is an additional sense of betrayal because this is coming from his own uncle,” royal commentator Kinsey Schofield exclusively told Page Six. In the book “Swan Song: Diana, My Sister,” which was released last week, Spencer wrote that he strongly opposed King Charles III’s wish for William and Prince Harry to walk behind their mother’s casket during the 1997 funeral procession. Spencer, 62, claimed he fought with…
