Portrait of <a href="https://en.wikipedia.org/wiki/en:Frederick,_Duke_of_Saxe-Altenburg" class="extiw" title="w:en:Frederick, Duke of Saxe-Altenburg"><span title="German duke (1763-1834)">Frederick, Duke of Saxe-Hildburghausen</span></a> (1763-1834), son of <a href="https://en.wikipedia.org/wiki/en:Ernest_Frederick_III,_Duke_of_Saxe-Hildburghausen" class="extiw" title="w:en:Ernest Frederick III, Duke of Saxe-Hildburghausen"><span title="Duke of Saxe-Hildburghausen 1745-1780">Ernest Frederick III, Duke of Saxe-Hildburghausen</span></a>
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Eduard Müller after August Bretschneider</div>
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