 Following an old Yngling tradition, Izyaslav inherited the lands of his maternal grandfather, i.e., Polotsk.According to the Kievan succession law, his progeny forfeited their rights to the Kievan throne, because their forefather had never ruled in Kiev supreme.They, however, retained the principality of Polotsk and formed a dynasty of local rulers, of which Vseslav the Sorcerer was the most notable.