Few women have had more written about them, mostly of a critical, salacious nature, than Wallis Simpson, the American divorcee for whom Edward VIII gave up his crown. Much of the gossip has fed on what became known as the ‘China Dossier’, a supposed compendium of the year Simpson (or Spencer, as she then was) spent in China in the mid-1920s while she was trying to get a divorce from her heavy-drinking, abusive, naval first husband.