The Duchy of Brzeà ÂàKujawski, also known as the Duchy of Kuyavian Brest, was a district principality in the Central Europe, in the region of Kuyavia. Its capital was Brzeà ÂàKujawski. It was formed on 3 January 1268 in the partition of the Duchy of Kuyavia. Its first ruler was duke Wà Âadysà Âaw I à Âokietek of the Piast dynasty. The state was conquered by the State of the Teutonic Order in 1332, during PolishâÂÂTeutonic War, with its capitol being captured on 21 April. Until 1300, it was an independent state, after what, it had become a fiefdom within the Kingdom of Poland, that in 1320, got transformed into the United Kingdom of Poland.