Sigismund II Augustus Jagiellon of Poland, King of Poland, Grand Duke of Lithuania, was born 1 August 1520 in Kraków, Poland to Sigismund Jagiellon (1467-1548) and Bona Sforza (1494-1557) and died 7 July 1572 Knyszyn, Poland of unspecified causes. He married Elisabeth of Austria (1526-1545) 5 May 1543 JL . He married Barbara Radziwiłł (1520-1551) 1547 JL . He married Catharine of Austria (1533-1572) 23 June 1553 JL . Alfred the Great (849-899)/s, Charlemagne (747-814)/s, Henry II of England (1133-1189)/s, Hugh Capet (c940-996)/s, William I of England (1027-1087)/s, Rollo of Normandy (860-932)/s.