crusading Teutonic Knights, who initially were invited in 1226 by Konrad I of Masovia from the Polish Piast dynasty to put an end to the constant pagan raids...

Henry I the Bearded, duke of Silesia, Senior Duke of Poland Konrad I of Masovia, duke of Mazovia and Kuyavia Henry II the Pious, senior duke of Poland...

was mentioned in medieval documents in 1297. In 1326, Trojden I, Duke of Masovia from the Piast dynasty granted it to knight Domisław. Jazgarzew was a private...

conflicts. In the early 14th century, the town was burned down by Prince of Masovia Bolesław, who supported Władysław Łokietek. This incident took place during...