When he was a minor, his uncle Hynek of Dubá, his father's brother and lord of the Saxon castle of Hohnstein, managed the property for him.

Therefore, the people of Lusatia sent out a military expedition in 1444, which joined forces with the Litoměřice landfryde and Těma of Koldice.

Their army then unsuccessfully besieged Mikeš Pancíř's Sloup castle, but captured Rybnov, Stvolínky and the towns of Žandov, Česká Kamenice and Osečná.

[5] In 1505, Vilém's eponymous son assigned Ronov and the small town of Stvolínky as a dowry to his wife Anežka from Helfenstein.

The castle was still maintained for some time, but when Elizabeth of Wartenberg sold Stvolínky to Adam Hrzán of Harasov in 1608, it was marked as deserted.

[5] During the Thirty Years' War, the castle served as a refuge for residents from the surrounding villages, who hid property there.

[5] In 1845, the owner of the Stvolínky estate at the time, Bishop Augustin Bartolomej Hille of Litoměřice, had Ron's Stations of the Cross built on the top.

[3][7] Their quality was reduced by the separated sections of the walls, along whose walkways the defenders could not move smoothly, and the impossibility of shooting curtains at all.

[7] The vast majority of the masonry is built from local basalt, which is only occasionally supplemented with hewn sandstone elements or bricks and tiles.

The main defensive element was an eighty to one hundred centimeter thick wall, in front of which two bastions stand out, whose slotted windows allowed the shooting of arrows.

The central rock and the wall attached to it divided the interior of the castle into the southwestern and northeastern parts.

On the first floor, however, there was only a footbridge that connected a pair of doors that led to the walkways of the adjacent sections of the walls.