Analysis of information sources in references of the Wikipedia article "Thân vương quốc Turov" in Vietnamese language version.
There arrived 'from overseas' a certain Rogvolod (Ragnvaldr in Old Norse). He installed himself on the Western Dvina at Polotsk, reportedly enjoying princely status. Likewise, Tur or Tury set himself up in a promontory fort by the Pripet, staying there long enough to leave his name on the place, Turov. It seems to have been a recent foundation, if not his own.
