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). They categorized them as one of the nations of Germanic tribes descended from one of the sons of Mannus, a Germanic ancestor. The other two such peoples were the Ingvaeones and Irminones.