Frank Lorenz Müller teaches Modern History at the University of St Andrews, UK. He works on nineteenth-century European history and specializes in the history of monarchy. In 2011 he published Our Fritz: Emperor Frederick III and the Political Culture of Imperial Germany. Heidi Mehrkens is Lecturer in Late Modern History at the University of Aberdeen, UK. She focuses on nineteenth-century European histories of monarchy, media and political cultures. In 2008 she published Statuswechsel. Kriegserfahrung und nationale Wahrnehmung im Deutsch-Französischen Krieg 1870-71. Together they edited Sons and Heirs: Succession and Political Culture in Nineteenth-Century Europe (Palgrave Macmillan, 2015).