Westward expansion of Wartislaw I Duchy of Pomerania

in meantime, wartislaw managed conquer vast territories west of oder river, area inhabited lutici tribes weakened past warfare, , included these territories duchy of pomerania. in 1120, had expanded west areas near oder lagoon , peene river. notably demmin, principality of gützkow , wolgast conquered in following years.

the major stage of westward expansion lutici territory occurred between otto of bamberg s 2 missions, 1124 , 1128. in 1128, demmin, county of gützkow , wolgast incorporated wartislaw s realm, yet warfare still going on. captured lutici , other war loot, including livestock, money, , clothes apportioned among victorious. after wartislaw s lutician conquests, duchy lay between bay of greifswald north, circipania, including güstrow (ostrów), west, kolobrzeg in east, , possibly far havel , spree rivers in south.

these gains not subject polish on lordship, placed under on lordship of nordmark margrave albrecht bear dedicated enemy of slavs, lothair iii, holy roman emperor. thus, western territories contributed making wartislaw independent polish dukes. wartislaw not 1 campaigning in these areas. polish duke boleslaw iii, during pomeranian campaign launched expedition müritz area in 1120–21, before turned subdue wartislaw. later holy roman emperor lothair iii (then saxon duke lothair of supplinburg) in 1114 initiated massive campaigns against local lutici tribes resulting in final defeat in 1228. also, territories invaded danish forces multiple times, who, coming baltic sea, used rivers peene , uecker advance line demmin–pasewalk. @ different times, pomeranians, saxons , danes either allies or opponents. pomeranian dukes consolidated power in course of 12th century, yet preceding warfare had left these territories devastated.