The first mention of Mława comes from July 2, 1426, when three princes of Mazovia - Siemowit V, Trojden II and Władysław I came here to a session of a local court. It is not known if Mława had already been an urban center, as there are no sources which would prove it. Three years later, Mława was incorporated as a town It was a royal town, located in the Płock Voivodeship in the Greater Poland Province of the Polish Crown. In 1521 during the Polish-Teutonic War, the town was captured and looted by the Teutonic Knights. In 1659 the town was burned by the Swedish troops, and in 1795, following the Third Partition of Poland, Mława became part of the Kingdom of Prussia.