| No British heir has prepared for the crown longer than King Charles III. And there has long been a debate about what type of sovereign he will be after Queen Elizabeth’s reign. Charles is not nearly as popular as his mother, which pundits attribute to his mutually unfaithful marriage to Princess Diana and the royals' perceived unsympathetic treatment of her death in 1997. But his defenders say he has been the hardest-working royal and a tireless campaigner for charitable causes. | 