"The Suebi (or Suebians, also spelled Suevi, Suavi) were a large group of Germanic peoples originally from the Elbe river region in what is now Germany ...
and the Czech Republic. In the early Roman era they included many peoples with their own names such as the Marcomanni, Quadi, Hermunduri, Semnones, and Lombards. New groupings formed later such as the Alamanni and Bavarians and two kingdoms in the Migration Period were simply referred to as Suebian.
Although Tacitus specified that the Suebian group was not an old tribal group itself, the Suebian peoples are associated by Pliny the Elder with the Irminones, a grouping of Germanic peoples who claimed ancestral connections. Tacitus mentions Suebian languages, and a geographical "Suevia"." - (en.wikipedia.org 11.08.2021)