apr 1, 1656 - John II Casimir Vasa, King of Poland, crowns the Black Madonna of Częstochowa as Queen and Protector of Poland in the cathedral of Lwów, after the miraculous saving of the Jasna Góra Monastery during the Deluge, an event which changed the course of the Second Northern War. The King swears a vow, the Lwów Oath, pledging to protect Poland's people from being conquered again
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Date:
apr 1, 1656
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~ 369 years ago