Pomerania During The High Middle Ages - Westward Expansion of Wartislaw I

Westward Expansion of Wartislaw I

In the meantime, Wartislaw managed to conquer territories west of the Oder river, an area inhabited by Lutici tribes weakened by past warfare, and included these territories into his Duchy of Pomerania. Already in 1120, he had expanded west into the areas near the Oder Lagoon and Peene river. Most notably Demmin, the Principality of Gützkow and Wolgast were conquered in the following years.

The major stage of the westward expansion into Lutici territory occurred between Otto of Bamberg's two missions, 1124 and 1128. In 1128, Demmin, the County of Gützkow and Wolgast were already incorporated into Wartislaw I's realm, yet warfare was still going on. Captured Lutici and other war loot, including livestock, money, and clothes were apportioned among the victorious. After Wartislaw's Lutician conquests, his duchy lay between the Bay of Greifswald to the north, Circipania, including Güstrow, to the west, Kolberg/Kołobrzeg in the east, and possibly as far as the Havel and Spree rivers in the south.

After the conquests, Wartislaw's realm stretched from the Bay of Greifswald in the North and Circipania with Güstrow in the West to the Havel and possibly also the Spree rivers in the South and the Kolobrzeg area in the east.

These gains were not subject to Polish over lordship, but were placed under over lordship of Nordmark margrave Albrecht the Bear, who according to Bialecki was a dedicated enemy of Slavs, by Lothair III, Holy Roman Emperor. Thus, the western territories contributed to making Wartislaw significantly independent from the Polish dukes. Wartislaw was not the only one campaigning in these areas. The Polish duke Boleslaw III, during his Pomeranian campaign launched an expedition into the Müritz area in 1120/21, before he turned back to subdue Wartislaw. The later Holy Roman Emperor Lothair III (then Saxon duke Lothair I of Supplinburg) in 1114 initiated large scale campaigns against the local Lutici tribes resulting in their final defeat in 1228. Also, the territories were invaded by Danish forces multiple times, who, coming from the Baltic Sea, used the rivers Peene and Uecker to advance to a line Demmin–Pasewalk. At different times, Pomeranians, Saxons and Danes were either allies or opponents. The Pomeranian dukes consolidated their power in the course of the 12th century, yet the preceding warfare had left these territories completely devastated.