<a href="https://en.wikipedia.org/wiki/Frederick_II,_Holy_Roman_Emperor" id="mwIg" rel="mw:WikiLink" title="Frederick II, Holy Roman Emperor">Frederick II, Holy Roman Emperor</a>, declares himself <a href="https://en.wikipedia.org/wiki/King_of_Jerusalem" id="mwIw" rel="mw:WikiLink" title="King of Jerusalem">King of Jerusalem</a> in the <a href="https://en.wikipedia.org/wiki/Sixth_Crusade" id="mwJA" rel="mw:WikiLink" title="Sixth Crusade">Sixth Crusade</a>.