<bdi><a href="https://en.wikipedia.org/wiki/en:Ludwig_Knaus" class="extiw" title="w:en:Ludwig Knaus"><span title="German artist (1829–1910)">Ludwig Knaus</span></a>
</bdi>
circa 1853 <div style="display: none;">date QS:P571,+1853-00-00T00:00:00Z/9,P1480,Q5727902</div>
<a rel="nofollow" class="external text" href="https://www.dorotheum.com/en/auctions/current-auctions/kataloge/list-lots-detail/auktion/12881-19th-century-paintings-and-watercolours/lotID/52/lot/2308537-ludwig-knaus.html?currentPage=3">Palais Dorotheum, Wien, 05.12.2017, lot 52</a>