sentences:  After Henry's intermediation Zemuzil failed to pay feudal dues and Casimir invaded and took control of Pomerania in the following year (1047).According to Schmidt it is not possible on the basis of the 1046 record to decide the location of his realm.Edward Rymar, following Łowmiański, believes that Žemužilis was a ruler of a unified Pomeranian state with its center in Kołobrzeg (Kolberg) rather than a smaller duchy, which explains why he was treated by Henry as a co-equal with the rulers of Bohemia and Poland.