Duchy of Pomerania - Bogislaw X Becomes Sole Ruler of The Duchy of Pomerania (1478)

Bogislaw X Becomes Sole Ruler of The Duchy of Pomerania (1478)

Further information: Brandenburg-Pomeranian conflict, Treaty of Soldin (1466), and Treaty of Prenzlau

Pomerania-Wolgast was reunited following the death of both Barnim VII and Barnim VIII in 1451. Both dukes died of the plague. The same disease caused the death of Joachim of Pomerania-Stettin (also in 1451), Ertmar and Swantibor, children of Wartislaw X, and Otto III of Pomerania-Stettin (all in 1464). Thus, the line of Pomerania-Stettin had died out.

The extinction of the House of Pomerania-Stettin triggered a conflict about inheritance with the Margraviate of Brandenburg. In the Treaty of Soldin of 1466, a compromise was negotiated: Wartislaw X and Eric II, the dukes of Pomerania, took over Pomerania-Stettin as a Brandenburgian fief. This was disputed already during the same year by the emperor, who intervened against the Brandenburgian overlordship of Pomerania. This led to a series of further warfare and truces, that were ended by the Treaty of Prenzlau of 1472, basically confirming the ruling of the Soldin treaty, but settling on a border north of Gartz (Oder) resembling Brandenburg's recent gains. This treaty was accepted by the emperor.

In 1474, Eric II died of the plague, and his son Bogislaw X inherited Pomerania-Stolp. Bogislaw's brothers had died the same year. After the death of his uncle Wartislaw X in 1478, he became the first sole ruler in the Duchy of Pomerania since almost 200 years.

Eric II had left Pomerania in tense conflicts with Brandenburg and Mecklenburg. Bogislaw managed to resolve these conflicts by both diplomatic and military means. He married his sister, Sophia, to Magnus II, Duke of Mecklenburg-Schwerin, and his other sister, Magarete, was married to Magnus' brother Balthasar. Bogislaw himself married Magareta, daughter of Brandenburg's Prince-elector Frederick II. Also, in 1478, Bogislaw regained areas lost to Brandenburg by his father, most notably the town of Gartz and other small towns and castles north of the Brandenburgian Uckermark. During the confirmation of the Peace of Prenzlau in 1479, the border was finally settled north of Strasburg and Bogislaw had to take his possessions as a fief from Brandenburg.