Sigismund II Augustus

Sigismund II Augustus was King of Poland and Grand Duke of Lithuania, the son of Sigismund I the Old, whom Sigismund II succeeded in 1548. He was the first ruler of the Polish–Lithuanian Commonwealth and the last male monarch from the Jagiellonian dynasty.

1 August 1520

Born on the same birth day (1 August): Dušan Švento • George Coulthard • George Hackenschmidt • George de Hevesy • James Henry Govier • Robert James Waller

Born in the same month (August 1520): Madeleine of Valois