 From 1029, Emperor Conrad II again waged war against Poland.Bolesław's son and successor Mieszko II lost Lusatia and finally had to renounce his claims in the 1033 Treaty of Merseburg.According to the Annalista Saxo chronicles, Theodoric played a key role in the emperor's campaign and in turn could succeed the Lusatian margrave Odo II in 1032.