House of Pomerania
In Pomerania proper, Polish rule ended with Boleslaw III's death in 1138. The Słupsk and Sławno areas (Lands of Schlawe and Stolp were ruled by Ratibor I and his descendants ("Ratiboriden" branch of the Griffin House of Pomerania) until the Danish occupation and extinction of the Ratiboride branch in 1227.