Copenhagen died on 12 February 1836 at Stratfield Saye at the age of 28 years,[REF] reportedly due to indulging in too many sugary "dainties" such as "sponge cakes, bath buns and chocolate creams,"[REF] but he most likely died due to his advanced age.
Copenhagen was buried without a headstone, and a few years after his death, the Duke was asked by the United Services Museum to disinter his body so that Copenhagen's skeleton could be publicly displayed alongside the skeleton of Napoleon's horse Marengo.