Summing up: Sometime before 72 BCE (fourteen years before he meets
Caesar) Ariovistus leading his tribe, politically known as the Suebi
religiuously being Hermunduri (an Iranian name), or Turingi (the same
name in Germanic) from their old home somewhere in the Przeworsk
culture on a trip of conquest towards the southwest. He reaches
Thuringia (later so named), some of his people, the Suevi decide to
stay, he reaches the Wetterau, some of his people, the Suevi decide to
stay. In 62 BCE he, the king of the Suevi, sends some stranded Indians
to Q. Metellus Celer in the Roman province of Gallia (Pliny, Nat.
Hist. II, 170). After he attacked the Aedui, he has now become the
ally of the Arverni (that's how he sees matters himself acc. to
Caesar). The Wetterau Suevi/Hermunduri, who in the meantime have got
the name of Marcomanni, since they live on the frontier of the Germani
to the Celts, have joined him after some time, as have some Celtic
tribes who used to lie in and around the Wetterau (Triboci, Nemetes,
poss. the Sedusii). After A. is defeated in 58 BCE, his remaining
troops, as Tungri, move to Aduatica, Tongern, where the
Vandili-related Cimbri have a fortified place.
In 11-9 BCE Drusus clears the Main plain for the Romans, but the
leader Marbod of the Przeworsk Suevi/Hermunduri, known as the
Marcomanni, orders them to retreat to Boiohaeimia, which used to
belong to the Celtic Boii.
In 1 CE some Hermunduri from Thuringia decide to go in Ariovistus
footsteps, but L. Domitius Ahenobarbus settles them on the upper Main.