The history of Ciężkowice dates back to the year 1125, when in a document of Papal legate Gilles de Paris, the village is mentioned as a property of the Tyniec Benedictine Abbey. On February 29, 1348, King Kazimierz Wielki granted it Magdeburg rights town charter.
Ciężkowice's past is marked by its connection to the Tyniec Benedictine Abbey in 1125, as documented by Papal legate Gilles de Paris. Two years later, on February 29, 1348, King Kazimierz Wielki granted Magdeburg rights town charter to it.