Herzogtum Oppeln
Around 1277 Bolko I was named co-ruler of the Duchy of Opole-Racibórz by his father, despite the fact that he was the third child. After Duke Władysław's death in 1282, Bolko I and his brother Casimir inherited Opole as co-rulers, while his other two brothers, Mieszko I and Przemysław inherited Racibórz also as co-rulers.