In little more than fifty years the regard with which the Royal Family are held has changed out of all recognition. Ther private lives are now the stuff of soap opera and it seems any one who comes into contact with them sells their story to the magazines or to the newspapers. Marion Crawford, 'Crawfie', as she was known to the Queen and Princess Margaret, became governess to the children of the Duke and Duchess of York in the early 1930s, little suspecting she was nurturing her future Queen.