拉瓦省
The oldest known mention of Mszczonów comes from a document of Duke Konrad I of Masovia from 1245, when it was part of fragmented Piast-ruled Poland. Mszczonów was granted town rights in 1377 or earlier. It was a royal town of Poland, administratively located in the Rawa Voivodeship in the Greater Poland Province of the Polish Crown. One of two main routes connecting Warsaw and Dresden ran through the town in the 18th century and Kings Augustus II the Strong and Augustus III of Poland often traveled that route.