The collective scientific work “Polystoria: Kings, Saints, Mythmakers in Medieval Europe” appeared as a result of research conducted by the Laboratory of Medieval Studies of the National Research University Higher School of Economics on the problems of the history of medieval Europe - both its Latin part and the Orthodox one, as well as various forms of interaction between them. The book examines a wide range of issues that were either not raised before or have not been sufficiently studied - from the peculiarities of historical anthroponymy in Kievan Rus and Scandinavia to attempts to create a “correct” picture of the past among the Western Slavs and in the Muscovite kingdom. Along with this, the main milestones in the history of the Abkhazian kingdom are outlined, the complex wanderings of the famous “Gertrude’s prayer book” are traced, and unknown sides of scholasticism of the 12th–13th centuries are revealed. and unexpected features of Orthodox religiosity at the turn of the Middle Ages and early modern times are revealed. For historians, philologists, religious scholars and political scientists.