Grischa Vercamer, Ph.D. (2008, Freie Universität Berlin), habilitation (2016), is Professor at the Technical University of Chemnitz. He has published monographs, articles, and collective volumes on the High and Late Middle Ages, including Perception of Good and Bad Power/Rulers in England, Poland and the Holy Roman Empire in the 12th century in the Historiography (Harrassowitz, 2020). Dušan Zupka, Ph.D. (2009, Comenius University in Bratislava) is Assistant Professor at that same University. He has published monographs and articles on power, rulership, and communication in medieval East Central Europe, including Ritual and Symbolic Communication in Medieval Hungary under the Árpád Dynasty, 1000–1301 (Brill, 2016).