Originally Posted by Sarn

The Norsemen allegedly had some enduring influence in Rus, as testified by loan words (these ones persist from Glagolitic script at Adriatic prior and out of any norse), such as yabeda "complaining person" (from æmbætti, embætti "office"), skot "cattle" (? from skattr "tax") and knout (from knútr, "a knotty wood"). Moreover, three Nordic names of the first Varangian rulers also became popular among the later Rurikids and then among the East Slavic people in general: Oleg (Helgi), Olga (Helga) and Igor (Ingvar).
https://en.wikipedia.org/wiki/Rus%27_people