1327 - Prince Kazimierz/Casimir the 1st pays homage to the Czech king
The efforts of the Polish king Vladislaus Łokietek to unite Polish territories were not accepted by many princes. In addition, the king of Bohemia, John of Luxemburg, voiced a claim to the Polish throne. The Silesian princes became the actors of the struggle for the Cracow throne. In early 1327, several Upper Silesian princes were called by the Czech king to Opava. Among them was also Kazimierz/Casimir I (1315-1358), the Duke of Cieszyn. It was there that he paid homage to the Czech king. From then on, the Cieszyn Duchy became a fief of the Czech crown with a large internal autonomy. The next king of Poland, Casimir the Great, in 1335 recognized the authority of John of Luxemburg over Silesia in exchange for his resignation from the claims to the Polish crown.