We do not know what happened to Sveneld. Perhaps he died in Bulgaria. It can be safely returned to his or Drevlyansky ulichsky inheritance. Mozht be moved to Kiev to Tarabya kaganesse and settled on the Dnieper Russian fellow fraternity. You can even dofantazirovat that there combined squads Sveneld Preticha and successfully fought off the pursuing Pechenegs, then Kiev finally established itself as the main center of southern Russia. He quickly gained strength in parallel with the other equally rapid growers competitor Novgorod, where, presumably, were brothers and sons of Svyatoslav. One of the sons, Vladimir, if he was really the son of Svyatoslav, became the most famous ruler of ancient Russia; another, Yaropolk, we only know of PVL. Novgorod clash with Kiev, Vladimir and Yaropolk of Kiev with relatives, sons and grandsons, Olga, was only a matter of time.