A plain dark cloak still streaked with mud from the battle of Waterloo – which the Duke of Wellington is said to have draped around the shoulders of Lady Caroline Lamb when he was one of the most famous, and she one of the most infamous people in Europe – is to be sold for the first time in 200 years. The victor of Waterloo and the tempestuous aristocrat, who was once served up naked in a silver dish at a dinner, had a brief fling in Brussels in the weeks after the battle on 18 June 1815 which changed...