Portrait of <a href="https://en.wikipedia.org/wiki/en:Barbara_Radziwi%C5%82%C5%82" class="extiw" title="w:en:Barbara Radziwiłł"><span title="(1520-1551) queen-consort of Poland, Grand Duchess of Lithuania">Barbara Radziwiłł</span></a> (1520-1551), wife of <a href="https://en.wikipedia.org/wiki/en:Sigismund_II_Augustus" class="extiw" title="w:en:Sigismund II Augustus"><span title="King of Poland and Grand Duke of Lithuania">Sigismund II Augustus</span></a> (1520-1572)
<div class="fn value">
<span lang="en">Anonymous</span> (<a href="https://en.wikipedia.org/wiki/en:Polish%E2%80%93Lithuanian_Commonwealth" class="extiw" title="w:en:Polish–Lithuanian Commonwealth"><span title="1569–1795 bi-confederate monarchy in Europe">Polish–Lithuanian Commonwealth</span></a>)<span style="display:none">Unknown author</span></div>
Lileyko Jerzy (1980). <i>Vademecum Zamku Warszawskiego</i>. <a href="//commons.wikimedia.org/wiki/Special:BookSources/83-22318-18-9" title="Special:BookSources/83-22318-18-9">ISBN 83-22318-18-9</a>