In ca. 1307, three Old Rus' chronicles--the Povest' vremennykh let ( Tale of Bygone Years , covering the years 872-1117), Kievan Chronicle (for the years 1119-1199), and the Galician-Volhynian Chronicle (for the years 1205-1289)--were joined together. These three component parts have come down to us only in the form of a compilation (datable to ca. 1425) which scholars have named the Hypatian Chronicle . Of the five extant witnesses of the Hypatian...