The region lying between the Vistula, Dnestrom and western Bugom has become known as Chervenskaya since its prisoyedinenіya by the Russian vladnіyam Vladimіrom Saints in the end of X stoltіya. According to the generally accepted mnnіyu, the proiskhozhdenіe of this nazvanіya owes to the city of Cherven. The justice of such a predpolozhenіya is confirmed by the fact that separate principalities in Russia, as well as in Poland, were always called by the name of their main city.