Herzogtum Schweidnitz-Jauer
In 1319 the town became part of the Duchy of Jawor of fragmented Poland under the Piast Duke Henry I of Jawor along with lands up to the town of Görlitz. He built a new town hall, the ruins of which can be seen today (Kramarska Tower). In 1320, he founded a Magdalene monastery in Lubań. He appointed a separate wójt for the town, which to that point administratively was subordinate to the wójt of Görlitz. Henry ruled the town for eighteen years, before he finally ceded it to his brother-in-law King John of Bohemia.