According to medieval chronicles the settlement was expanded in the 11th century.[4] It was granted town rights between 1242 and 1275.[5] As a result of the fragmentation of Poland, Jawor became part of the Duchy of Silesia, then the Duchy of Legnica from 1248, and from 1274 it was the capital of the Duchy of Jawor,[4] the southwesternmost duchy of medieval Poland, before being integrated with the Duchy of Świdnica in 1346, part of which it remained until 1392, all the time remaining under the founding dynasty of the Piasts.