K.A. v. Hardenberg.
<bdi><a href="https://en.wikipedia.org/wiki/en:Johann_Heinrich_Wilhelm_Tischbein" class="extiw" title="w:en:Johann Heinrich Wilhelm Tischbein"><span title="German artist (1751-1829)">Johann Heinrich Wilhelm Tischbein</span></a>
</bdi>
before 1830 <div style="display: none;">date QS:P,+1830-00-00T00:00:00Z/7,P1326,+1830-00-00T00:00:00Z/9</div>, based on the date of death of the artist.
Unknown source<span style="display: none;">Unknown source</span>