Flag of the Farnese Papacy (Pope Paul III), based on <a rel="nofollow" class="external text" href="http://farm9.staticflickr.com/8245/8610208554_50c854b4d1_o.jpg">depictions in Palazzo Farnese</a> (Taddeo Zuccari's murals).
<a href="//commons.wikimedia.org/wiki/User:Dahn" title="User:Dahn">Dahn</a>
CC BY 4.0
<span class="int-own-work" lang="en">Own work</span>