Козьма Пражский
The area has been populated at least since the 1st century BC. The earliest mention of the town itself is in the 12th century "Chronica Boëmorum" by Cosmas of Prague. He mentions the town of "Cladzco" as belonging to the Bohemian nobleman Slavník in 981, father of Bishop Adalbert of Prague and progenitor of the Slavník dynasty.