KURT VILLADS JENSEN (b. 1957; Ph.D. 1992, Copenhagen University; D.Phil. 2011, University of Southern Denmark) is Professor of Medieval History and director of the Centre for Medieval Studies at Stockholm University. He has worked with cultural and religious encounters in medieval Latin Europe, as well as with military history and crusading, comparing the Baltic Sea Region and the Iberian Peninsula. He is now studying the relationship between changes in Latin sacramental theology and the implications for the concept of sacred warfare c. 1050–1300.