This usage, which is not found in other ancient writers, is probably due to a confusion of the Suebi with the agglomeration of peoples under their supremacy, which as we know from Strabo extended to some at least of the eastern tribes.
It is probably from the Alamannic region that those Suebi came who joined the Vandals in their invasion of Gaul, and eventually founded a kingdom in north-west Spain.
Suebi seems never to be applied to the Langobardi and seldom to the Baiouarii (Bavarians), the descendants of the ancient Marcomanni.
The Suebi eventually migrated south and west to reside for a while in the Rhineland area of modern Germany, where their name survives in the historic region known as Swabia.
Contemporaneously with the self-governing province of Britannia, the kingdom of Suebi in Galicia became the first of the sub-Roman kingdoms to be formed in the distintegrating territory of the Western Roman Empire.
Bracara Augusta, the modern city of Braga, became the Capital of the Suebi, as it was previously the capital of the Gallaecia Roman province.