Sorbian March

The commanders of the Sorbian March bore the title dux Sorabici (limitis) in the Annales, but are also referred to elsewhere as counts (comites), margraves (marchiones), and dukes of Thuringia (duces Thuringorum).

The boundary between Thuringia and the Sorbs was defined as the Saale river by Einhard, writing in the 830s: Salam fluvium, qui Thuringos et Sorabos dividit ("the river Saale, which divides the Thuringii and the Sorbs").

The Sorbian March probably (loosely) included the land east of the Saale as far as the Elster and the Pleisse, which might have been controlled by castles.

The Sorbian March was frequently troubled in the 9th century by Slavic insurrections, who were tributaries of the Germans.

[2] During this period, the Sorbs were reduced to serfdom and the march was largely pacified.