Księstwo opolskie; Czech: Opolské knížectví; ‹See Tfd›German: Herzogtum Oppeln) was one of the duchies of Silesia ruled by the branch of Polish Piast dynasty...

Bolesław I, died 8 December 1201. Early in 1202 Henry's uncle, Duke Mieszko IV Tanglefoot of Upper Silesia, attacked and took the Duchy of Opole (Oppeln), which...

  Bolesław I   Jarosław   Mieszko I 1177-1185   Bolesław I   Jarosław   Mieszko I   Konrad 1185-1201   Bolesław I   Jarosław   Mieszko I 1201-1202   Henry I   Mieszko...

Thuringia from 1221. Upon the death of his cousin Duke Casimir I of Opole, son of Mieszko I Tanglefoot, in 1230, he acted as guardian of his minor nephews...

Opole (Polish: [ɔˈpɔlɛ] ; ‹See Tfd›German: Oppeln [ˈɔpl̩n] ; Silesian: Ôpole) is a city located in southern Poland on the Oder River and the historical...

Silesia were those of Greater Moravia and Bohemia. In the 10th century, Mieszko I incorporated Silesia into Civitas Schinesghe, a Polish state. It remained...

Racibórz (Polish: Księstwo opolsko-raciborskie, ‹See Tfd›German: Herzogtum Oppeln und Ratibor) was one of the numerous Duchies of Silesia ruled by the Silesian...

duke Mieszko I of the Polans had conquered large parts of Silesia. From the Middle Silesia fortress of Niemcza, his son and successor Bolesław I the Brave...

in 990, the first Polish state was created by Duke Mieszko I, and then expanded by king Boleslaw I at the beginning of the 11th century. He established...

were Greater Moravia and Bohemia. In the 10th century, the Polish ruler Mieszko I of the Piast dynasty incorporated Silesia into the newly established Polish...