Zbigniew Oleśnicki

Zbigniew Oleśnicki (born 1389, Sienno, Poland—died April 1, 1455, Sandomierz) was a Polish statesman and cardinal who was chief councillor to King Władysław II and regent of Poland (1434–47). A member of the Polish noble house of Dębno of Oleśnica, he became the leading member of the royal Privy Council after he saved the king’s life at the Battle of Grunwald in 1410. Olésnicki was ordained a priest in 1412 and was made bishop of...