Short answers, pulled from the story.
The Rus people were originally Norsemen from present-day Sweden who settled along river routes between the Baltic and Black Sea from around the 8th to 11th centuries AD. Modern scholarship favors this derivation over theories linking the name to the Volga River or other distant sources.
The term likely derives from Old Norse rōþer or róðr, words meaning rowing or fleet levy. This linguistic root connects directly to Roslagen, a coastal region in Sweden where teams of rowers served the kings' fleets.
Staraya Ladoga emerged as the earliest and most significant settlement of the Rus people in the mid-8th century. Envoys departed from the Ladoga area to reach Constantinople on the 2nd of May 839 according to Western European Annals of St. Bertin.
Old East Slavic only became their native language by the end of the 11th century after the Rus elite became bilingual around 950. The Primary Chronicle written in 1113 used fully adapted Old East Slavic forms showing complete assimilation after the second half of the 11th century.
Numerous artifacts of Scandinavian affinity found in northern Russia demonstrate substantial material culture presence including high-status burials from the 9th to 10th centuries. Ancient DNA analysis shows tested individuals cluster present-day Icelandic East Baltic populations edge variability previously published Swedish Vikings close dated medieval individuals Estonia.