| Native Name: | Księstwo sławieńskie (Polish) Herzogtum Pommern-Schlawe (German) Ducatus Slaunensis (Latin) |
| Conventional Long Name: | Duchy of Pomerania-Schlawe |
| Common Name: | Pomerania-Schlawe |
| Era: | High Middle Ages |
| Status: | Duchy |
| Status Text: | Fiefdom of Denmark |
| Government Type: | Feudal duchy |
| Life Span: | 1190–1226/1238 |
| Year Start: | 1190 |
| Event Start: | Separation from Pomerania-Stettin |
| Event End: | Incorporation into the Duchy of Gdańsk |
| Year End: | 1236/1238 |
| P1: | Pomerania-Stettin |
| Flag P1: | Grunwald Słupsk i Szczecin.svg |
| Border P1: | no |
| S1: | Duchy of Gdańsk |
| Capital: | Sławno |
| Religion: | Roman Catholic |
| Title Leader: | Duke |
| Leader1: | Bogislaw III |
| Year Leader1: | 1190–1223 (first) |
| Leader2: | Ratibor II |
| Year Leader2: | 1223–1236/1238 (last) |
| Today: | Poland |
The Duchy of Pomerania-Schlawe, also known as the Duchy of Sławno, was a feudal duchy with its capital in Sławno, located in Pomerania (in modern northwest Poland). It was formed in 1190, when it separated from the Duchy of Szczecin. In 1238 it was conquered and incorporated into the Duchy of Gdańsk.
The duchy was formed in 1190 when it separated from Duchy of Szczecin. It was a feudal duchy under the sovereignty of Denmark. The state was located in the Słupsk and Sławno Land in Pomerania and its capital was Sławno.[1] Bogislaw III became the ruler of the country.[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.[5] Between 1236 and 1238, the duchy was conquered and incorporated into the Duchy of Gdańsk.[6] [7] [8]