The Czech Chronicle, also known as the Chronicle of the Czechs, is a historical text that documents the history of the Czech lands from their mythical origins to the 14th century. Written by the monk Cosmas of Prague in the early 12th century, it is one of the earliest sources of Czech history and provides insights into the political and cultural life of the time. The chronicle combines historical facts with legends, making it a valuable resource for understanding the early medieval period in the Czech Republic. It covers significant events, such as the reign of Duke Václav and the establishment of the Premyslid dynasty, contributing to the national identity of the Czech people.