Nicole Bériou was Professor of Medieval History at Lyon and Paris (EPHE) until 2014. During the years 2011-2014, she was also the Director of the Institut de recherche et d'histoire des textes (CNRS) in Paris. Her thesis on preaching in thirteenth century Paris was awarded the Premier prix Gobert in 2000. As a specialist in the history of religion, culture, and communication, her main contributions deal with preaching. Since 2004 she has also been a series editor of the Bibliothèque d'histoire culturelle du Moyen Âge in collaboration with Franco Morenzoni, and since 2009, the general editor of the Revue Mabillon.
Christoph T. Maier has taught medieval history at universities in Britain and Switzerland. He is presently Privatdozent at the History Department of the University of Zurich, Switzerland. He has published two monographs as well as numerous articles on crusade sermons and preaching, crusade liturgy, gender aspects of the crusades and crusade historiography, military orders, saints' cults, and late medieval urban history ranging from the ninth to the sixteenth centuries. He is the series editor of Crusades Subsidia.