Its capital was originally Lubiszewo, and since 1252 or 1253, it was moved to Tczew.

Its only ruler was duke Sambor II of the Samboride dynasty.

[2][3] It existed until 1236, when it got conquered by the Duchy of Gdańsk during the war between two countries.

[6] It was re-established in 1251 as the vassal of the State of the Teutonic Order.

[4] It existed until 1269, when it got incorporated into the Duchy of Świecie during the civil war in Pomerelia.