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Konrad II of Czersk (pl: Konrad II czerski; c. 1250 – 24 June/21 October 1294 [1] ), was a Polish prince member of the House of Piast, Duke of Masovia during 1264-1275 jointly with his brother, after 1275 sole ruler over Czersk and Duke of Sandomierz during 1289. He was the eldest son of Siemowit I of Masovia and Pereyaslava, a Russian princess.
Jan 19, 2024 · 1226 Jan 1. Invitation from Masovia. Mazovia, Poland. In 1226, Konrad I, Duke of Masovia in north-eastern Poland, appealed to the Knights to defend his borders and subdue the pagan Baltic Old Prussians, allowing the Teutonic Knights use of Chełmno Land as a base for their campaign.
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Among the Piast Dukes of Masovia, Bolesław's IV nephew Konrad I was Polish high duke from 1229 to 1232 and again from 1241 to 1243; he was the ruler who in 1226 called the Teutonic Order for help against the pagan Old Prussians threatening the northern borders of his territory.
Jul 26, 2023 · Konrad I of Masovia (Polish: Konrad I Mazowiecki; 1187? – 1247), son of Casimir II and Helen of Moravia, was the 6th Duke of Masovia. After his father's death in 1194, Konrad was brought up by his mother.
- Kraków, Małopolskie
- 1187
- "Kunigaikštis Konradas I Mazovietis"
- Kraków, Małopolskie, Poland
- Life
- Marriage and Children
- Konrad's Legacy
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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...Conrad of Mazovia, in Polish Konrad Mazowiecki, duke of Mazovia of the Piast dynasty, was the son of Prince Casimir the Just (Kazimierz Sprawiedliwy) and Princess Helena. He governed ... From: Conrad of Mazovia in Encyclopedia of the Middle Ages » Subjects: History — Early history (500 CE to 1500) Reference entries.
Sep 7, 2023 · Boleslaw II of Masovia or Boleslaw II of Płock (ca. 1251 – 20 April 1313). He was the younger brother Konrad II of Masovia and son of Siemowit I of Masovia. His mother was Pereyaslava [1], daughter of Daniel of Galicia. Boleslaus became Duke of Masovia in 1262. In 1275, he shared Masovia with his brother and he became Duke of Płock.
