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 took place on this occasion, the information on the return of the accord, acting for the good of the country and release of prisoners indicate that a conflict actually did occur. The marriage with Oda considerably affected the position and prestige of Mieszko, who entered the world of Saxon aristocracy. As a son-in-law of Margrave Dietrich, he gained an ally in one of the most influential politicians of the Holy Roman Empire. As the Margrave was a distant relative of the Emperor, Mieszko became a member of the circle connected to the imperial ruling house. Probably in the early 980s