Question: What is the name of the ancient people first described by a Roman historian in his treatise that is adjacent to Prussia?
Sentence (from "Aesti"): According to Tacitus, Aestui, the land of the Aesti, was located somewhere east of the "Suiones" (Swedes) and west of the "Sitones" (possibly the Kvens), on the Suebian (Baltic) Sea.
Relevant evidence: No