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After Leszek's death, a war between Henry and Duke Konrad I of Masovia erupted in 1228. Initially, Henry was successful as he repelled Konrad forces at the Battles of Międzyborze, Skała and Wrocieryż (all in Lesser Poland). Then the situation changed drastically.
Sep 7, 2023 · Boleslaus II of Mazovia died on April 20, 1313. In 1279 he married firstly to Sophia, the daughter of Grand Duke Treniota of Lithuania, they had the following children: 1. Siemowit II of Masovia, Duke of Masovia (1310–1345) 2. Trojden I of Masovia, Duke of Masovia, Czersk and Warsaw (1310–1341) 3.
After the death of Henry the Pious, his eldest son, Bolesław the Bald, took the title of high duke; however, he did not appear in Kraków, where the government was exercised by Klement of Ruszcza on his behalf. Konrad I of Masovia took this opportunity, and despite the strong resistance of the knights and nobility, he finally entered Kraków ...
Bolesław II of Masovia or Bolesław II of Płock (pl: Bolesław II mazowiecki (płocki); ca. 1253/58 – 20 April 1313), was a Polish prince, member of the House of Piast, Duke of Masovia during 1262-1275 jointly with his brother, after 1275 sole ruler over Płock, after 1294 ruler over all Masovia and Duke of Kraków and Sandomierz during 1288-1289.
Duchy of Masovia of Bolesław IV composed of Masovia and Eastern Kuyavia Following the death of Duke Bolesław III Wrymouth in 1138, as specified by his testament , the Masovian province was governed by his second son Bolesław IV the Curly , who, after he had expelled his elder half-brother Władysław II , in 1146 became Duke of Poland.
Władysław's rule as Duke of Kraków and High Duke of Poland lasted for four years, until 1206, when, after the death of his principal supporter voivode Mikołaj Gryfita, Leszek I the White returned to the capital. The cause of the rebellion was a tough enforcement of rights against the powerful nobility and the alliance with the Pomeranians.
