Subsequently he elevated Gnesen into the metropolitan see of Poland, with jurisdiction over the bishoprics of Cracow, Breslau and Kolberg, all three of these new sees, it is important to notice, being in territory conquered by Boleslaus; for hitherto both Cracow and Breslau had been Bohemian cities,-while Kolberg was founded to curb the lately subjugated Pomeranians.
C. 1115), that 3' who generally styled himself duke of Poland, or dux totius Poloniae, claimed a sort of supremacy among these little states, a claim materially strengthened by the wealth and growing importance of his capital, Cracow, especially after Little Poland had annexed the central principality of Sieradia (Sieradz).
The Polish princes opposed a valiant but ineffectual resistance; the towns of Sandomir and Cracow were reduced to ashes, and all who were able fled to the mountains of Hungary or the forests of Moravia.
By an agreement with the queen mother of Hungary at Kassa in 1383, the Poles finally accepted Jadwiga as their queen, and, on the 18th of February 1386, greatly against her will, the young princess, already betrothed to William of Austria, was wedded to Jagiello, grand duke of Lithuania, who had been crowned king of Poland at Cracow, three days previously, under the title of Wladislaus II.
To say nothing of the labours of the Cistercians as colonists, pioneers and churchbuilders, or of the missions of the Dominicans and Franciscans (the former of whom were introduced into Poland by Ivo, bishop of Cracow,' the personal friend of Dominic), the Church was the one stable and unifying element in an age of centrifugal particularism.