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Bolesław I of Masovia (Polish: Bolesław I Mazowiecki; 1208 – ca. 25 February 1248), was Polish prince member of the Polish House of Piast, Duke of Sandomierz (only a part) during 1229-1232, Duke of Dobrzyń during 1233-1247 and Duke over whole Masovia during 1247-1248. He was the second son of Konrad I of Masovia and Agafia of Rus.
Bolesław I of Masovia ( Polish: Bolesław I Mazowiecki; 1208 – ca. 25 February 1248), was Polish prince member of the Polish House of Piast, Duke of Sandomierz (only a part) during 1229–1232, Duke of Dobrzyń during 1233-1247 and Duke over whole Masovia during 1247–1248. He was the second son of Konrad I of Masovia and Agafia of Rus.
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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.
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Konrad was the youngest son of High Duke Casimir II the Just of Poland and Helen of Znojmo, daughter of the Přemyslid duke Conrad II of Znojmo (ruler of the Znojmo Appanage in southern Moravia, part of Duchy of Bohemia). His maternal grandmother was Maria of Serbia, apparently a daughter of the pre-Nemanjić župan Uroš I of Rascia. After his father'...
Around 1208/1209 Konrad married Agafia of Rus, daughter of Prince Svyatoslav III Igorevich. They had ten children: 1. Bolesław I(c. 1210 – 17 April 1248), Duke of Masovia 2. Casimir I (c. 1210/13 – 14 December 1267), Duke of Kuyavia 3. Siemowit I (c. 1215 – 24 June 1262),succeeded eldest brother as Duke of Masovia. 4. Eudoxia (b. c. 1215–1225), mar...
Konrad is considered by Poles to be responsible for Teutonic Knights' control of most of the Baltic coastline, undermining Polish authority in the area. King Casimir III of Poland had to accept the rule of the Order in Thorn and Kulm by the 1343 Treaty of Kalisz. After the Thirteen Years' War in the 1466 Second Peace of Thorn, the Polish King Casim...
Bojtar, Endre (1999). Foreword to the Past: A Cultural History of the Baltic People. Central University Press.Boockmann, Hartmut (1992). Deutsche Geschichte im Osten Europas. Ostpreußen und Westpreußen(in German). Berlin.Bruce-Boswell, Alexander (1957). "Poland, 1050-1303". In Tanner, J.R.; Previte-Orton, C.W.; Brooke, Z.N. (eds.). The Cambridge Medieval History: Victory of the Papacy. Vol. 6. Cambridge at the Univ...Corwin, Edward Henry Lewinski (1917). The Political History of Poland. The Polish Book Importing Company.Catholic Encyclopedia Innocent III resolved (1207) to organize a new crusade...Instead of concentrating the forces of Christendom against the Mohammedans, the pope himself disbanded them by proclai...Apr 18, 2024 · Bolesław I (born 966/967—died June 17, 1025) was the duke (from 992) and then (from 1024) first king of Poland, who expanded his country’s territory to include Pomerania, Lusatia, and, for a time, the Bohemian princely lands. He made Poland a major European state and also created a Polish church independent of German control.
- The Editors of Encyclopaedia Britannica
Apr 18, 2024 · Bolesław II (born 1039—died 1081) was a duke (1058–76) and later king (1076–79) of Poland. Bolesław assumed the rule of Poland on the death of his father, Casimir I the Restorer, in 1058. During the struggle between the German kings and the papacy, Bolesław was able to restore the international position of Poland.
Nov 13, 2022 · As a result of the fragmentation of Poland after the death of Polish monarch Bolesław III Wrymouth, in 1138 the Duchy of Mazovia was established, and during the 12th and 13th centuries it joined temporarily various adjacent lands and endured invasions of Prussians, Yotvingians, and Ruthenians.
