Presumed portrait of <a href="https://en.wikipedia.org/wiki/en:Ernest_Augustus_I,_Duke_of_Saxe-Weimar-Eisenach" class="extiw" title="w:en:Ernest Augustus I, Duke of Saxe-Weimar-Eisenach"><span title="Duke of Saxe-Weimar and Saxe-Eisenach">Ernest Augustus I, Duke of Saxe-Weimar-Eisenach</span></a> (1688-1748), misidentified with his grandson <a href="https://en.wikipedia.org/wiki/en:Karl_August,_Grand_Duke_of_Saxe-Weimar-Eisenach" class="extiw" title="w:en:Karl August, Grand Duke of Saxe-Weimar-Eisenach"><span title="German noble (1757-1828)">Charles Augustus, Grand Duke of Saxe-Weimar-Eisenach</span></a> (1757-1828)
<ul><li><small style="font-size:85%;">Identification proposed by user <a href="//commons.wikimedia.org/wiki/User:Ecummenic" title="User:Ecummenic">Ecummenic</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Ecummenic" title="User talk:Ecummenic">talk</a>) based on the comparison with some portraits of that prince (see images below)</small></li></ul>
<bdi><a href="https://en.wikipedia.org/wiki/en:Ferdinand_Jagemann" class="extiw" title="w:en:Ferdinand Jagemann"><span title="German artist (1780-1820)">Ferdinand Jagemann</span></a>
</bdi>
The original uploader was <a href="https://en.wikipedia.org/wiki/de:User:Hajotthu" class="extiw" title="w:de:User:Hajotthu">Hajotthu</a> at <a href="https://en.wikipedia.org/wiki/de:" class="extiw" title="w:de:">German Wikipedia</a>.