拉瓦省
On October 24, 1419, Archbishop Mikołaj Trąba confirmed the town charter of Łowicz and unified legal regulations of the three districts of Łowicz: "Podgrodzie" (Suburb), "Stare Miasto" (Old Town) and "Nowe Miasto" (New Town). In 1443, a town hall was built in the market square of the Old Town. Due to its convenient locations, multiple royal privileges and frequent fairs, Łowicz prospered. Administratively it was located in the Rawa Voivodeship in the Greater Poland Province of the Polish Crown.