Władysław Opolski. The duchy's capital was Bytom, formerly part of Lesser Poland until in 1177 the Polish High Duke Casimir II the Just had attached it to the...

Charles I of Hungary. She was the third child and only daughter of Duke Casimir of Bytom by his wife Helena, whose origins are unknown, although the later historiography...

daughter of Bolesław, Duke of Koźle-Bytom in 1360 give him additional rights over the half of Bytom taken by his father Casimir I in 1357. The dispute over these...

of Bytom. In 1177, Casimir II of Poland granted Siewierz to Mieszko IV Tanglefoot, duke of Silesia and Racibórz, together with whole Duchy of Bytom. The...

Duchy of Bytom (Knížectví Bytomské, Księstwo Bytomskie, Herzogtum Beuthen) Duchy of Cosel [de] (Koźle) Duchy of Crossen [de] Duchy of Falkenberg [de] Duchy...

Boleslaus I. von Teschen) (c. 1363 – 6 May 1431) was a Duke of half of Bytom and Siewierz from 1405, Duke of Cieszyn and half of both Głogów and Ścinawa...

castellany of Bytom, including the Chorzów area, belonged to the Seniorate Province (Kraków Duchy) of Poland. In 1179 it was awarded by Duke Casimir the Just...

the former Lesser Polish lands of Bytom, Oświęcim, Zator, Siewierz and Pszczyna from the new Polish High Duke Casimir II the Just in 1177. When in 1202...

example of Casimir of Cieszyn at Opava and swear homage to King John of Bohemia, including the Piast nobles Leszek of Racibórz, Siemowit of Bytom and George...

Duke of Cieszyn by his wife Elisabeth, daughter of Bolesław, Duke of Koźle-Bytom. In the chronicle of Jan Długosz he is named the second son, but this is...