After the death of Margrave Henry III in 1288 , he inherited Lusatia and after the death of Frederick Tuta in 1291 he inherited the Osterland .
Theodoric 's first territorial possession was the Pleissnerland .
After the death of Margrave Henry III in 1288 , Theodoric inherited Lusatia and after the death of Frederick Tuta in 1291 Theodoric inherited the Osterland .
Theodoric 's first territorial possession was the Pleissnerland .