Margravate of Meissen the occasion to conquer the margravial lands east of the Elbe and demanded the surrender of Meissen. The following German–Polish War ended with the 1018 Peace of Bautzen, whereby Meissen had to cede the Milceni region (later Upper Lusatia) to Poland. In 1031 however, King Conrad II of Germany was able to reconquer the Milceni lands, which were returned to Meissen. In 1046, Count Otto of Weimar-Orlamünde became margrave, followed by Egbert II of the Brunonids upon his death in 1067. Egbert II entered into a longstanding conflict with Emperor Henry IV, because of which he had to renounce the
Meissen based on extensive local deposits of china clay (kaolin) and potter's clay (potter's earth). Meissen porcelain was the first high-quality porcelain to be produced outside of the Orient. The first European porcelain was manufactured in Meissen in 1710, when by decree of King Augustus II the Strong the Royal-Polish and Electoral-Saxon Porcelain Factory ("Königlich-Polnische und Kurfürstlich-Sächsische Porzellan-Manufaktur") was opened in the Albrechtsburg. In 1861, it was moved to the "Triebisch" river valley of Meissen, where the porcelain factory can still be found today. Along with porcelain, other ceramics are also manufactured. The Albrechtsburg, the former residence of the House of