The Polish name "House of Sobiesław" derives from Duke
Sobiesław I, steward for the Piast dukes of
Greater Poland in Pomerelia, while "Samborides" as used in English and German derives from his probable son and successor, Duke
Sambor I. According to German historiography the first certain
princeps of Pomerelia was Sambor, as the records concerning Sobiesław I stems from the 15th century
Oliwa chronicle of the 15th century seemed not reliable. Polish historians however do not share this reservation and have been using his father as the name for the dynasty. During the conquest of the
Pomeranian lands between 1113 and 1121, the Polish duke
Bolesław III Wrymouth about 1116 had installed governors ruling in the Pomerelian lands, probably the ancestors of Sobiesław I. An affiliation with the Pomeranian dukes
Siemosił and
Świętobor or a relation with the Polish Piast dynasty has never been conclusively established. The most important duke was Swiętopełk II who in
Kashubian traditional history carries the nickname "the Great". Swiętopełk received Pomerelia as vassaldom from his suzerain, the Polish High Duke
Leszek I the White of the Piast dynasty in 1216 or 1217. Perhaps acting in concert with the Piast prince
Władysław Odonic of Greater Poland he benefited from his ally action when they had High Duke Leszek I and Duke
Henry I the Bearded of
Silesia kidnapped and then Leszek murdered during the
Gąsawa Piast assembly in 1227. As a result, Swiętopełk declared himself an independent ruler and
dux of Pomerania. Swiętopełk II was the greatest military commander of the dynasty, having defeated various armies of Piast, Prussian, Danish, German and Griffite invaders during his long reign. He was the first Polish (Slavic) ruler who actively was challenged and fought military campaigns against the
Teutonic Order and many times aided the pagan
Prussians against the Order and Piast princes carrying crusading campaigns against them. His brothers
Sambor II and Ratibor ceded some of their holdings to the Teutonic Knights allowing the Order State to get a first important foothold on the right bank of the Vistula River. Swiętopełk's son and last Samboride ruler
Méstwin II fought various traditional enemies, including the Teutonic Order. As a matter of necessity when fighting for his throne, he pledged feudal homage from a couple of towns to the
Ascanian margraves of Brandenburg by signing the
Treaty of Choszczno in 1269. In 1282 he concluded an inheritance agreement at
Kępno with Duke
Przemysł II of Greater Poland, King of Poland from 1295, who upon his death incorporated Pomerelia into the Lands of the
Polish Crown. ==Samborides ancestry==