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Jan Kubisz - Collections Europeana
Jan Kubisz (24 January 1848 – 25 March 1929) was a Polish educator and poet from the region of Cieszyn Silesia. His poem PĹ‚yniesz Olzo po dolinie (You flow, Olza, down the valley), centered around the Olza River, became unofficial anthem of Cieszyn Silesia, especially Poles in Zaolzie.