In the Middle Ages, the term Swabia indicated a larger area, covering all the lands associated with the Frankish stem duchy of Alamannia stretching from the Vosges Mountains in the west to the broad Lech river in the east: Like all of Southern Germany, what is now Swabia was part of the La Tène culture, and as such has a Celtic (Gaulish) substrate.
[1] By the mid-3rd century, groups of the Suebi form the core element of the new tribal alliance known as the Alamanni, who expanded towards the Roman Limes east of the Rhine and south of the Main.
[2] By the late 5th century, the area settled by the Alemanni extended to Alsace and the Swiss Plateau, bordering on the Bavarii to the east, the Franks to the north, the remnants of Roman Gaul to the west, and the Lombards and Goths, united in the Kingdom of Odoacer, to the south.
[3] Swabia was one of the original stem duchies of East Francia, the later Holy Roman Empire, as it developed in the 9th and 10th centuries.
The major dynasties that arose out of medieval Swabia were the Habsburgs and the Hohenzollerns, who rose to prominence in Northern Germany.
Smaller feudal dynasties eventually disappeared, however; for example, branches of the Montforts and Hohenems lived until modern times, and the Fürstenberg survive still.
The region proved to be one of the most divided in the empire, containing, in addition to these principalities, numerous free cities, ecclesiastical territories, and fiefdoms of lesser counts and knights.
[5] In 1519, the League conquered Württemberg and sold it to Charles V after its duke Ulrich seized the Free Imperial City of Reutlingen during the interregnum that followed the death of Maximilian I.
It helped to suppress the Peasants' Revolt in 1524–26 and defeat an alliance of robber barons in the Franconian War.
Fearing the power of the greater princes, the cities and smaller secular rulers of Swabia joined to form the Swabian League in the fifteenth century.
While secular princes such as the Duke of Württemberg and the Margrave of Baden-Durlach, as well as most of the Free Cities, became Protestant, the ecclesiastical territories (including the bishoprics of Augsburg, Konstanz and the numerous Imperial abbeys) remained Catholic, as did the territories belonging to the Habsburgs (Further Austria), the Sigmaringen branch of the House of Hohenzollern, and the Margrave of Baden-Baden.
Baden, historically part of the duchy of Swabia and also of the Swabian Circle, is no longer commonly included in the term.
As an ethno-linguistic group, Swabians are closely related to other speakers of Alemannic German, i.e. Badeners, Alsatians, and German-speaking Swiss.
The popular German surname Schwab as well as Svevo in Italy are derived from this area, both meaning literally "Swabian".