|Alternative name (s):||Hrad Kostomlaty nad Labem; Kostomlaty nad Labem Castle|
|Creation time :||first mentioned in 1223|
The village Kostomlaty was first mentioned in 1223 with the mention of Sezema von Kostomlat , who is said to come from the noble family of Choustnik ( z Choustníka ). He or his successor Mutina von Kostomlat built a castle near Kostomlaty on the banks of the Elbe, which was first named Mydlovar Castle in 1356 . The simply structured castle was built of bricks and surrounded by a mighty mantle wall.
In the middle of the 14th century the Kostomlaty estate with the Mydlovar Castle belonged to the Lords of Častolowitz , from whom the Moravian nobleman Jan Puška von Kunstadt acquired it in 1402 . He was a supporter of Jan Žižka , but later turned to the moderate Prague people, with whose help he was appointed captain of Nymburk . That is why he was captured by Hynek Boček of Podebrady in 1425 and taken to his castle Podebrady . After Jan Puška died there soon, Hynek Boček appropriated the Mydlovar Castle. After Hynek Boček's death in 1426 it was inherited by his brother Viktorin von Podebrady , from whom it passed to his son Georg von Podebrady , who gave it to his son Heinrich the Elder. J. inherited. After his death in 1592, King Vladislav II claimed the Kostomlat possessions. The next owner was the Bohemian Colonel Chancellor and Oberstlandkämmerer Johann von Schellenberg ( Jan ze Šelmberka ) and after his death in 1508 Heinrich von Dohna ( Jindřich z Donína ). Since Bořek von Dohna was involved in the Bohemian uprising in 1547, the rule was confiscated by the emperor and incorporated into the royal estate of Lysá nad Labem . The castle was then given up by the court chancellery. As early as 1561 it was described as desolate.
- Tomáš Durdík : Encyclopedie českých hradů. Libri, Praha 1996, ISBN 80-85983-03-6 , pp. 188-189.
- August Sedláček : Hrady, zámky a tvrze království Českého. Volume 10: Boleslavsko. Tiskem a nákladem Františka Šimáčka, Praha 1895, pp. 351–352 (reprint. Argo, Praha 1997, ISBN 80-7203-060-4 ).