John III Sobieski was King of Poland and Grand Duke of Lithuania from 1674 until his death in 1696.
Biography from Wikipedia, available under CC BY-SA 4.0.
Also born on August 17
- Robert De Niro1943 · American actor
- Sean Penn1960 · American actor and filmmaker
- Thierry Henry1977 · French footballer
- Larry Ellison1944 · American businessman
- Jiang Zemin1926 · Leader of China from 1989 to 2002
- Austin Butler1991 · American actor
- Charles I of Austria1887 · Habsburg monarch from 1916 to 1918
- Mae West1893 · American actress and singer
Also born in 1629
- Christiaan Huygens1629 · Dutch mathematician and physicist
- Ernest Augustus, Elector of Hanover1629 · Elector of Hanover
- Balthasar Charles, Prince of Asturias1629 · Prince of Asturias
- Pieter de Hooch1629 · Dutch Golden Age painter
- Cornelis Tromp1629 · Dutch naval officer
- Archibald Campbell, 9th Earl of Argyll1629 · Scottish politician, soldier, and nobleman
- Niels Juel1629 · Danish naval officer
- Archduchess Isabella Clara of Austria1629 · Duchess of Mantua and Montferrat from 1649 to 1665