Portrait of <a href="https://en.wikipedia.org/wiki/en:Guglielmo_Gonzaga,_Duke_of_Mantua" class="extiw" title="w:en:Guglielmo Gonzaga, Duke of Mantua"><span title="Duke of Mantua and Montferrat (1538–1587)">Guglielmo Gonzaga</span></a> (1538-1587), Duke of Mantua and Montferrat (as Guglielmo X of Monferrato) from 1550 to 1587.
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<span lang="en">Anonymous</span><span style="display:none">Unknown author</span></div>
16<sup>th</sup> century <div style="display: none;">date QS:P571,+1550-00-00T00:00:00Z/7</div>
<a class="external free" href="https://en.wikipedia.org/wiki/Image:GuglielmoI.JPG">http://en.wikipedia.org/wiki/Image:GuglielmoI.JPG</a>