<bdi><a href="https://en.wikipedia.org/wiki/en:Christian_August_Lorentzen" class="extiw" title="w:en:Christian August Lorentzen"><span title="Danish painter (1749-1828)">Christian August Lorentzen</span></a>
</bdi>
Oslo Museum: image no. <a rel="nofollow" class="external text" href="http://www.digitaltmuseum.no/things/021045470887/OMU/OB.00474">OB.00474</a>, via digitaltmuseum.no.