Mieszko II Lambert the help of foreign forces. Probably the brother who caused the first problems to Mieszko II was Bezprym, who allegedly with the support of Otto won the alliance of Kiev in order to take power. When Mieszko II was busy defending Lusatia from the troops of Conrad II, the Kievan expedition started from the east with Yaroslav I the Wise as the leader. In 1031 Poland was invaded and then Bezprym was settled on the throne. Mieszko II and his family were forced to flee the country. Queen Richeza and her children found refuge in Germany. The King couldn't escape
Mieszko I of Poland after the battle, a testimony to Mieszko's high standing among the Empire's dignitaries, just one year after his baptism: Widukind of Corvey reported that the dying Wichmann asked Mieszko to hand over Wichmann's weapons to Emperor Otto I, to whom Wichmann was related. For Mieszko the victory had to be a satisfying experience, especially in light of his past defeats inflicted by Wichmann. The exact result of Mieszko's fighting in Western Pomerania is not known. Subsequent loss of the region by Mieszko's son Bolesław Chrobry suggests that the conquest was difficult and the hold over that territory rather tenuous. In