The first reliable document suggests the Namysłów castle was built, from wood, in 1360. The order to build the castle was given by the Czech king and the Holy Roman Emperor, Charles IV, in the location of a former gord of the Dukes of Oleśnica.
In 1533, the castle was transferred to the authorities of the city of Wrocław. Soon after the castle's courtyard was extended with additional housing units. In the seventeeth and eighteenth-century, the castle underwent further reconstruction, namely after the fire in 1658 and after a Prussian activity in the area, pillaging the castle. In the late-nineteenth century, the castle became property of the Haaselbach family who founded the Namysłów Brewery. Presently, the castle remains property of the town brewery.
References:Prunn Castle is perched on an almost vertical Jurassic outcrop high above the Altmühl river valley south-west of Regensburg. Its impressive appearance from a distance is matched by the views from the castle of the surrounding Altmühltal countryside.
Lords of Prunn were first mentioned in 1037, and they will have certainly chosen the site because of its favourable position on several transportation routes. The castle itself dates from around 1200, a time when many castles were being built. The Danube region centring around Kelheim became very important in this period under the Bavarian duke Ludwig I. One of the oldest parts of the castle is the 31-metre keep.
In 1288, Duke Ludwig of Bavaria acquired the castle from the lords of Prunn-Laaber. In the first half of the 14th century the duke then invested the Fraunberg vom Haag family with the castle.