The first bishop, Burchard (died 969), established a foundation ("monasterium") which in the course of the 11th century developed a chapter of canons. In 1346 the diocese stretched from the Ore Mountains and Iser Mountains in the south, from there northwards downstream the Queis and Bober rivers, forming the eastern boundary, in the north downstream the Oder to the junction of the Lusatian Neisse and on along the Oder, then crossing to the middle course of the Spree in the northwest. It embraced the five provostries of Meissen, Riesa, Wurzen, Grossenhain and Bautzen, the four archdeaneries of Nisani (Meissen), Chemnitz, Zschillen (Wechselburg) and Lower Lusatia, and the two deaneries of Meissen and Bautzen. Poorly endowed in the beginning, it appears to have acquired later large estates under Otto III and Henry II.