
1) Ros
Found on
https://www.crosswordclues.com/clue/varangians

The Varangians or Varyags (Væringjar; Greek: Βάραγγοι, Βαριάγοι, Varangoi, Variagoi) was the name given by Greeks and East Slavs to Vikings, who between the 9th and 11th centuries ruled the medieval state of Rus` and formed the Byzantine Varangian Guard. According to the 12th century Kievan Primary Chronicle, a group of Varangian....
Found on
http://en.wikipedia.org/wiki/Varangians

Varangians was a name given by the Greeks and Slavs to the Scandinavian rovers who in the 9th and 10th centuries sailed down the Dnieper and threatened Constantinople.
Found on
http://www.probertencyclopaedia.com/browse/CXV.HTM

A group of Norsemen who assumed control over communities of East Slavs (q.v.) ca. A.D. 860 and who founded the Rurikid Dynasty, which ruled for over 700 years.
Found on
https://irp.fas.org/world/russia/su_glos.html
No exact match found.