Grafschaft Glatz
As early as 1546, two years before John's death, his sons were started negotiations with Ernest of Bavaria, the administrator of Salzburg, about the possibility of selling the County of Kladsko to him. After the Estates of Bohemia accepted Ernest as a landed subject, the County of Kladsko was transferred to him on 14 November 1549. A dispute arose when John's son Vratislav refused to sell him the Lordship of Hummel, western part of the Kladsko area. This Lordship had been administratively part of Kladsko since 1477, but Vratislav argued it was still a separate Lordship and had been acquired separately by John in 1541. When Ernest threatened to call off the whole transaction, Vratislav gave in and handed him Hummel, including the towns of Duszniki Zdrój and Lewin Kłodzki.