Theodoric of Landsberg, a member of the House of Wettin was Margrave of Landsberg from 1265 until his death.
Background
Theodoric was the second son of Henry the Illustrious, margrave of Meissen and Lusatia, and his wife Constance of Babenberg, a daughter of Duke Leopold VI of Austria. In 1261, his father split the Margraviate of Landsberg off from his Lusatian territory, which after the War of the Thuringian Succession in 1265 he transferred to Theodoric, thereby creating a cadet branch of the Wettin dynasty.
Career
The territory comprised the westernmost part of Lusatia between the Saale and Mulde rivers, centered around Landsberg Castle. Theoderic"s march included the towns of Delitzsch, Leipzig and Groitzsch, his estates stretched down to Zwickau and Grimma with the residence at Weißenfels. The creation of an Imperial State without consent by the Holy Roman Emperor was against legal provisions, nevertheless it had no penalty effects as a central Imperial authority did not exist during the years of the interregnum.
His tomb is located in the former abbey of Seußlitz, today part of Nünchritz, Saxony.
Landsberg was then sold to the Ascanian margraves of Brandenburg.