The origin of the name the Schwabengau is somewhat mysterious as the region is located far northwards from the territory of the medieval
Duchy of Swabia. There are two explanations. First, the name without doubt refers to the ancient Germanic
Suebi tribe; since they were located in the
Elbe area in the 1st century according to
Tacitus'
Germania, some of them must have stayed there, and the Schwabengau region was their last remainder. Second, people from Swabia colonized the area that once belonged to the Kingdom of the
Thuringii and was conquered by the
Frankish Empire in 532. The area was later incorporated into Frankish
Austrasia and Swabian settlers entered the region under the reign of King
Sigebert I from 561 to 575. Other nearby shires (Friesenfeld and
Engelin) are also named after distant Germanic tribes. In 927 the
East Frankish king
Henry the Fowler, Saxon duke since 912, installed his confidant
Thietmar of Merseburg as count in the Schwabengau; upon his death he was succeeded by his son
Siegfried in 932. Schwabengau was ruled by the Margraves of the Saxon Eastern March until the death of
Thietmar II in 1030.
Esico of Ballenstedt, the progenitor of the Ascanian dynasty, is first documented in 1036, holding large possessions in Schwabengau and adjacent Serimunt. By the 12th century, the Saxon Schwabengau and neighbouring Serimunt had merged into the County of Ballenstedt, ruled by the Ascanian dynasty which originated in Aschersleben (
Ascaria). Upon the deposition of
Henry the Lion in 1180, Count
Bernhard even assumed the Saxon ducal title. When the Ascanians divided their territories in 1212, the former Schwabengau became the western part of the newly founded state of Anhalt ruled by Duke Bernhard's elder son
Henry I and named after
Anhalt Castle near
Harzgerode. The rough outline of Schwabengau could still be seen in the western borders of the
Free State of Anhalt in the mid 20th century. ==Counts==