Christoph von Redern was considered a traitor when he opposed Emperor Ferdinand II and supported Frederick V of the Palatinate (also known as Fridrich Falcký) after the Battle of White Mountain in 1620. All of his property was then taken from him. Frýdlant then went to Albrecht von Wallenstein, who became Duke of Frýdlant and lived at Jičín. Wallenstein returned Catholicism to the area and held the lands until 1634, when he was assassinated. Frýdlant then went to Matthias Gallas of Campo as a reward for his fight against Wallenstein in 1636 by Emperor Ferdinand II.