Mikołaj Oleśnicki
Lord Mikołaj Oleśnicki the elder was a Polish Calvinist nobleman who established the first Protestant academy in Poland. His wife Zofia Oleśnicka was the first notable Polish woman poet.
The ex-priest Francesco Stancaro prevailed on Oleśnicki to drive the monks out of his settlement at Pińczów in 1550 and establish it as a Calvinist centre, the Pińczów Academy. He corresponded with Melanchthon in 1560.
His nephew was Mikołaj Oleśnicki the younger, initially a Calvinist, he converted in 1598 to Roman Catholicism to gain royal favor.