Around 1200 Sambor I, Duke of Pomerania, built a fortress here.
The Duke of Pomerania was in financial troubles and had not paid the professors.
Poland gave Bytów as lien to the Dukes of Pomerania.
As such, it was shaped after the territory held by Ratibor I, Duke of Pomerania.
Wartislaw I, Duke of Pomerania supported and aided both missions.
Between 1368 and 1478, it was the residence of the Dukes of Pomerania.
He had to look for other income opportunities and went into the service of the Duke of Pomerania.
In 1359 it passed to the Duke of Pomerania.
Wartislaw I, Duke of Pomerania is recorded as the local duke during this time.
The town was founded in 1185 by Sobieslaw I, Duke of Pomerania.