Editing Bolesław III Wrymouth (section)

===Strengthening the Polish-Pomeranian borders===
The conquest of Pomerania had been a lifelong pursuit for Bolesław. His political goals were twofold: strengthen the Polish border on the Noteć river line, and subjugate Pomerania.  He intended to exercise Polish political overlordship but not actually incorporate<ref>Western Pomerania, rich principality ruled by [[Wartislaw I, Duke of Pomerania|Wartislaw I]]. The confluence of the [[Oder]] river and the lands of the lower and  upper areas were also a matter of interest to German and Danish margraves, so Bolesław must be also interested in them. S. Szczur: ''Historia Polski – średniowiecze'', p. 124.</ref> Pomerania with the exception of [[Gdańsk Pomerania]] and a southern belt north of the River [[Noteć]]. By 1113 the northern border had been strengthened, including the fortification of [[Santok]], [[Wieleń]], [[Nakło nad Notecią|Nakło]], [[Czarnków]], [[Ujście]] and [[Wyszogród]]. Some sources report that the border began at the mouth of the rivers Warta and Oder in the west, running along the [[Noteć]] all the way to the [[Vistula]].<ref>R. Grodecki, S. Zachorowski, J. Dąbrowski: ''Dzieje Polski średniowiecznej,'' vol. I, pp. 143–144.</ref>

Before Bolesław III began to expand in [[Gdańsk Pomerania]] (Pomerelia), he normalized his political relations with Bohemia in 1114 at a great convention on the border of the [[Nysa Kłodzka]] river.<ref name="Zachorowski, p. 141"/> He was assisted by Bohemian princes of the Premyslid line: namely, [[Vladislaus I, Duke of Bohemia|Vladislaus I]], [[Otto II the Black]] and Soběslav I. The pact was sealed by the marriage of Bolesław (a widower since his wife Zbyslava's death<ref>According to O. Balzer, Zbyslava of Kiev died between 1109 and 1112. O. Balzer: ''Genealogia Piastów'', p. 121.</ref>) with Vladislaus I and Otto II's sister-in-law, the German noblewoman [[Salomea of Berg]].<ref>[[Richeza of Berg|Richeza]] and [[Sophia of Berg]], Salomea's sisters, are the wives of Vladislaus I and Otto II the Black, respectively. S. Trawkowski: ''Bolesław III Krzywousty'' [in:] A. Garlicki (ed.) ''Poczet królów i książąt polskich'', pp. 80–89.</ref>