In 1238 it was conquered and incorporated into the Duchy of Gdańsk.

It was a feudal duchy under the sovereignty of Denmark.

[2] His existence remain contested, instead being proposed by some historians to be Bogusław I or Bogislaw II.

[3] After his death, he was succsided by Ratibor II, whose existence also remains contested.

Instead, he is sometimes proposed to be Ratibor of Białogarda[4] or Racibor Bogusławowic.