During the Ostsiedlung, a settlement was founded by German settlers some kilometres off the site of the Slavic/Lechitic one. It was located within the boundaries of today's downtown of Kołobrzeg and some of the inhabitants of the Polish town moved to the new settlement. On 23 May 1255 it was chartered under Lübeck law by Duke Wartislaw III of Pomerania, and more settlers arrived, attracted by the duke. Hermann von Gleichen, German bishop of Kammin also supported the German colonisation of the region. The settlers received several privileges such as exemption from certain taxes and several benefits, making it difficult for the indigenous Pomeranian population to compete with Germans.