Sigismund II Augustus King of Poland and Grand Duke of Lithuania (1520–1572) Parents Bona Sforza Sigismund I the Old Children Barbara Woroniecka Siblings Wojciech Olbracht John Jagiellon Hedwig Jagiellon, Electress of Brandenburg Katharina of Poland, Countess of Montfort Regina Szafraniec Catherine Jagellon Anna Jagiellon Anna Jagiellon Sophia Jagiellon, Duchess of Brunswick-Lüneburg Isabella Jagiellon Partners Diana di Cordona Barbara Gizanka Barbara Radziwiłł Catherine of Austria Elizabeth of Austria
