“‘Every few weeks I do a search on Twitter and there is an incredible benevolence about the Habsburgs,’ says Eduard Habsburg, Hungary’s ambassador to the Vatican and the former ruling family’s unofficial social-media maven. ‘There is definitely renewed interest.’ The reasons for this burst of enthusiasm are nuanced, even contradictory. This year’s centennial of the end of the first world war, and of the empire’s collapse, is part of the explanation. So is a sense that the anxieties of the late imperial period, years of disorienting change in politics and society, overlap with today’s.”