The formal marriage between Constance and Conrad took place in the border town of Santok in 1260, after the death of Przemysł I.
High Duke of Poland from 1232, he conquered further Greater Polish territories around Santok in 1234.
His succession was claimed by his Kuyavian cousin Władysław I the Elbow-high, who had to deal with his rivaling Silesian relative Duke Henry III of Głogów, while the Brandenburgers finally conquered the strategically important fortress of Santok on the Warta River.
The situation in the northwest was more complicated: Margrave Otto III of Brandenburg, using the death of Henry the Bearded as a pretext, took the important Greater Polish fortress at Santok and besieged Lubusz.
Meanwhile the Brandenburg margraves forwarded the incorporation of Lubusz Land into their New March, created and expanded further to the northeast after the acquisition of the Santok castellany in 1296 on the forest areas between the Duchy of Pomerania and Greater Poland.
Although he stopped the advance of Brandenburg's troops into his domains (Santok in 1247, Zbąszyń in 1251 and Drezdenko in 1252), the situation remained tense on the Brandenburg border.
Santok |