Mieszko I of Poland Mieszko I of Poland Mieszko I (; – 25 May 992) was the ruler of the Polans from about 960 until his death. A member of the Piast dynasty, he was a son of the legendary Siemomysł, and a grandson of Lestek. He was the father of Bolesław I the Brave (the first crowned king of Poland) and of Gunhild of Wenden. Most sources make Mieszko I the father of Sigrid the Haughty, a Nordic queen, though one source identifies her father as Skoglar Toste, and the grandfather of Canute the Great (Gundhild's son), and the great-grandfather of Gunhilda of
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