What was their purpose from that point on? To live a life together to prove that it had not all been for nought? To be happy? To appear to be happy? There must have been an element of continuous silent strain for them both, a seam of guilt they dared not plunder. ‘I have a theory that when men let women down, they feel awful,’ Hugo Vickers told me. ‘The duke turned Wallis into the most hated woman in the world, then he couldn’t get her what he promised her: the HRH title, or his family to accept