The story
Although most migrants were not from Swabia, the peoples they settled among (Hungarians, Romanians, etc) often referred to them all as Swabians.
Etymology from Wiktionary, CC BY-SA 4.0.
Danube Swabian
Today it means: A member or descendant of any of the unrelated, usually non-Swabian groups of Germans that settled along the Danube and elsewhere in southeastern Europe (not including the Carpathian Germans or Transylvanian Saxons). Full definition →