Mikołaj Rej
Mikołaj Rej or Mikołaj Rey of Nagłowice (4 February 1505 – between 8 September and 5 October 1569) was a Polish poet, prose writer, politician, and musician of the early Polish Renaissance. He was the first major author to write exclusively in the Polish language and is regarded, alongside Biernat of Lublin and Jan Kochanowski, as one of the founders of Polish literary language and literature.