In 1842, Prince Georg William Schaumburg-Lippe purchased the estate for 2,500,000 gold coins for his second-born son, William Karl August, and thus established the Náchod secondary family. Prince William and his wife, Princess Bathildis, began to occupy the castle in the 1860s. The castle owner was aware of the value of the Náchod castle and probably did not carry out any major alterations. He had the castle archives and library reorganised and opened the interiors of the castle to the public during the summer months. He also succeeded in the administration of the estate. The Náchod region excelled especially in sheep breeding and the irrigation system in Ratibořice. After Williams's death, his second-born son Frederick began to administer the estate. The last lord of the castle was married twice. At the end of the 19th century he married Princess Louise Caroline, daughter of the Danish king. After her death, he married Princess Antoinette Anna of Anhalt, with whom he occupied the Náchod estate until the end of World War II. On 21 June 1945, the Schaumburg-Lippe princely family had all its property confiscated and transferred to the state.