Question: The Ingaevones and the Istvaeones tribal groups were what kind of group?
Sentence (from "Istvaeones"): The Istvaeones, also called Istaevones, Istriaones, Istriones, Sthraones, and Thracones, are mentioned as a Germanic tribal grouping in the writings of Tacitus and Pliny the Elder (~1st century AD).
Relevant evidence: Yes