Bolesław Januszowic

Bolesław Januszowic (1385/86 - ca. 4 May 1424), was a Polish prince member of the House of Piast.

He was the second son of Duke Janusz I of Warsaw and Danutė of Lithuania, a daughter of Kęstutis.

Life

From an early age he was prepared to take over the government in Masovia, alongside his older brother Janusz the Younger. In 1409 he was send by his father at the head of a retaliatory expedition against the Teutonic Order, culminating with the conquest and burning of Działdowo and 14 surrounding villages. Two years later (1411), as an envoy of the Dukes of Masovia he participated in the act of signing of the Peace of Thorn.

In 1412 Bolesław was in Kraków, at the court of King Władysław II Jagiełło, and he, among others princes, traveled to the frontier city of Stará Ľubovňa with the Polish King, where there was a meeting with the German king Sigismund of Luxemburg .

In 1414 he participated in another war with the Teutonic Knights, this time in person coordinating all the activities of branches of Mazovia. After 1422 following the death of his older brother , Janusz Younger Boleslaw took over the part of governments in the duchy of Czersk, including exercising the courts of the subjects.

Januszowice Boleslaw died unexpectedly between 1420 and 1425 , his father was still alive, not waiting for the independent governments. He was married to the daughter of Prince Fiodor Olgierdowic , Anna , with whom he had two sons who died young, Konrad and subsequent heir Mazovia Boleslaw IV , as well as a daughter Euphemia, issued as a candidate for the throne of the Lithuanian Michajłuszkę .

Lies with his father in the basement of the Basilica Cathedral of St. John the Baptist in Warsaw .