(Slavic: show forth peace) (1458-1484) Prince of Poland, died Grodno, Russia. He was made grand-duke of Lithuania in 1471. Elected King of Hungary, he refused to exercise the power. He died of consumption. Patron of Poland; invoked against the plague, and Turks. Emblems: crown, lily. Buried in cathedral of Vilna. Canonized 1522. Feast, Roman Calendar, 4 March.