The next, 14th issue of the collection "Medieval Russia" includes articles on various aspects of the history of Russia of the X-XVII centuries. A. A. Gorsky considers the problem of the time of the appearance of princely nicknames, many of which have become traditional designations of famous political figures of Russia. The topic of A. S. Korolev's research is, to a certain extent, the mysterious figure of Yaroslav's eldest son "Wise" - Ilya. S.V. Polekhov and S.V. Gorodilin are studying the question of the time and circumstances of the purchase of land in Pskov by the Lithuanian prince Skirgail Olgerdovich. The works of American researchers of the Russian Middle Ages G. Lenhoff and A. Kleimola are associated with the "Tsarevich of the Horde" Peter, the hero of the everyday work.