Mieszko I, Duke of Cieszyn brothers in the consent of the foundation of a Cistercian abbey in Rudy. After his father's death in 1282, and according to the custom during the fragmentation of Poland, Mieszko and his brothers divided the Duchy of Opole-Racibórz between them: Mieszko and his youngest brother Przemysław received together the district of Racibórz as co-rulers. The other two brothers, Casimir and Bolko I, received Opole. Because Przemysław was still a minor at that time, Mieszko ruled alone until he attained his majority, in 1284. In 1285 Mieszko politically supported the Bishop of Wrocław, Thomas II Zaremba against Henry IV Probus, providing
Mieszko I of Poland another daughter of Mieszko, married to a Pomeranian Slavic Prince; she could be a daughter of Dobrawa or of one of the previous pagan wives. Also, a theory exists (apparently based on Thietmar and supported by Oswald Balzer in 1895) that Vladivoj, who ruled as Duke of Bohemia in 1002–1003, was a son of Mieszko and Dobrawa. Although most modern historians reject this claim, Bohemian historiography supported the Piast parentage of Vladivoj. In 978/79, Mieszko married Oda of Haldensleben (b. 955/60 – d. 1023), daughter of Dietrich of Haldensleben, Margrave of the Northern March. She was abducted by her future