Matching family tree profiles for Sobiesław I gdański, princeps
About Sobiesław I gdański (von Pommerellen), princeps
Sobieslaw I was the first recorded duke of Pomerelia (Pomorze Gdanskie) of the Sobieslawice dynasty. His descent has not been conclusively established. It has been speculated that he may have been a son of Swietopelk I, duke of Pomerania (about 1080-1148), and he has also been linked to the Polish Piast dynasty and the Pomeranian house of Greifen. His ancestors probably had been appointed governors in Pomerelia after its conquest by the Polish duke Boleslaw III Krzywousty (Wrymouth) in 1116. Sobieslaw is credited with the donation of the Cistercian abbey of Oliwa about 1180.
Sobieslaw was married before 1150 to an unnamed wife. They had two sons, Sambor I and Msciwoj I, both of whom married and had progeny, but Sambor's sons died young.
Sobieslaw died about 1177/79. He was succeeded by Sambor I, who was in turn succeeded by his younger brother Msciwoj I. -------------------- http://en.wikipedia.org/wiki/Samborides