Michael I was the ruler of the Polish–Lithuanian Commonwealth as King of Poland and Grand Duke of Lithuania from 29 September 1669 until his death in 1673.

Prince Jeremi Michał Korybut Wiśniowiecki, nicknamed Hammer on the Cossacks, was a notable member of the aristocracy of the Polish–Lithuanian Commonwealth, Prince of Vyshnivets, Lubny and Khorol in the Crown of the Kingdom of Poland and the father of the future King of Poland, Michael I.