Siemowit I of Masovia (Polish: Siemowit (Ziemowit) I mazowiecki) (d. 23 June 1262), was a Polish prince member of the House of Piast, Duke of Czersk during...

Siemowit (Polish pronunciation: [ɕɛˈmɔvit], also Ziemowit [ʑɛˈmɔvit]) was, according to the chronicles of Gallus Anonymus, the son of Piast the Wheelwright...

children: Bolesław I (c. 1210 – 17 April 1248), Duke of Masovia Casimir I (c. 1210/13 – 14 December 1267), Duke of Kuyavia Siemowit I (c. 1215 – 24 June...

Siemowit III of Masovia (alternatively Ziemowit III; c. 1320 – 1381) was a prince of Masovia and a co-regent (with his brother Casimir I of Warsaw) of...

Konrad I died on 31 August 1247. According to his will, most of Masovia passed to his oldest son, Bolesław I, and the youngest of his sons, Siemowit I, received...

second son Casimir I, while Masovia passed to the first-born Bolesław I upon his death in 1247, succeeded by the youngest brother Siemowit I the next year...

but did not send her to Kraków to be crowned. During the interregnum, Siemowit IV, Duke of Masovia, became a candidate for the Polish throne. The nobility...

Siemowit II of Rawa (pl: Siemowit II rawski; 1283 – 18 February 1345), was a Polish prince member of the House of Piast, Duke of Warsaw and Liw during...

Siemowit IV (Ziemowit IV), also known as Siemowit IV the Younger (pl: Siemowit IV Młodszy; ca. 1353/1356 – 21 January 1426), was a Polish prince, member...

Siemowit of Masovia may refer to these Masovian dukes: Siemowit I of Masovia (1224–1262), son of Konrad I of Masovia and his wife Agafia Siemowit II of...

January 1374), married Casimir I, Duke of Cieszyn. Siemowit III (1316/25 – 16 June 1381), Duke of Masovia. Casimir I (1329/31 – 26 November/5 December...

duchy. Siemowit was, however, killed in a battle against the Lithuanians, who also took his heir prisoner. Casimir I 1211 Second son of Conrad I and Agafia...

Among the princes who participated were his brother Przemysł I, Casimir I of Kuyavia, Siemowit I of Masovia, Władysław of Opole and Bolesław V the Chaste...

or king called Kazimierz (Casimir), sometimes also identified as duke Siemowit I of Masovia, got lost in the forest, where Warsaw Old Town is currently...

Land east of the Vistula River from the heritage of his younger brother Siemowit I. Upon Casimir's death 1267, the Duchy of Kuyavia was divided by his sons...

the oldest townships in Poland, having received city rights from Duke Siemowit I of Masovia in 1257. Throughout the 15th and 17th centuries, the settlement...

Czersk. Also High duke of Poland twice (1288, 1289). He was younger son of Siemowit I of Masovia and Pereyaslava, a Rus' princess, who was according to some...

Bolesław gave Dobrzyń nad Wisłą to his youngest brother, Siemowit I. In 1231, Bolesław I became involved with his father and brothers in the installation...

Siemowit of Cieszyn (Polish: Siemowit cieszyński) (c. 1340 – 25 September 1391) was a Polish prince, member of the Piast dynasty in the Cieszyn branch...

1264–1269 Daughters Pereyaslava († 12 April 1283), m. ca. 1248 Prince Siemowit I of Masovia Ustynia, m. 1250/1251 Prince Andrew II of Vladimir-Suzdal Sofia...

continued the fight. During 1254-1255 Bolesław sought the release of Siemowit I of Masovia and his wife, Pereyaslava, who were captured by his brother...

family". Nicknames: Ziemko, Ziemek. Siemowit, Ziemowit, one of the four legendary Piast princes of Poland Siemowit I of Masovia, a Duke of Czersk (1247–1248)...

I, Duke (1246–1281) Bolko I, Duke (1281–1313) Duchy of Masovia (complete list) – Konrad I, Duke (1200–1247) Bolesław I, Duke (1247–1248) Siemowit I,...

the princes who participated were his brother Bolesław, Casimir I of Kuyavia, Siemowit I of Masovia, Władysław of Opole and the host, Bolesław V the Chaste...

Duke Bolesław V the Chaste and Duke of Mazovia Siemowit I, in order to attack Duke of Kujawy, Casimir I of Kuyavia. A few weeks later, Lesser Poland was...

thanks to the help of a coalition formed with Bolesław V the Chaste, Siemowit I of Masovia, and Bolesław the Pious, Leszek eventually forced his father...

ruling dynasty of Poland. The first documented Polish monarch was Duke Mieszko I (c. 960–992). The Piasts' royal rule in Poland ended in 1370 with the death...

May 18 – John Climping, English cleric, chancellor and bishop June 23 – Siemowit I, Polish nobleman and knight (House of Piast) July 13 – Henry Wingham,...

was descended from two kings of Poland, and through his mother's side Siemowit, the first confirmed duke of Poland. Frederick Augustus' two predecessors...

Masovia between him and his younger brother Siemowit IV after the death of their father on 16 June 1381, Janusz I finally obtain the totally of his domains:...