 The tests proved that Naundorff was not the dauphin, and the heart was that of Louis-Charles.In 2004, the heart of Louis XVII was transferred to the Saint-Denis basilica, the traditional burial place for France's kings and queens.At the Mass, 12-year-old Prince Amaury de Bourbon-Parme carried the heart and placed it in a niche beside the tombs of Louis-Charles' parents, Louis XVI and Marie-Antoinette.