Portrait of <a href="https://en.wikipedia.org/wiki/en:Louis_IX,_Landgrave_of_Hesse-Darmstadt" class="extiw" title="w:en:Louis IX, Landgrave of Hesse-Darmstadt"><span title="Landgrave of Hesse-Darmstadt (1719-1790)">Ludwig IX, Landgrave of Hesse-Darmstadt</span></a> (1719-1790)
<bdi><a href="//commons.wikimedia.org/wiki/Category:18th-century_portrait_paintings_of_men,_artist,_location_and_year_missing" title="Category:18th-century portrait paintings of men, artist, location and year missing">Unidentified painter</a>
</bdi>
circa 1750-1790
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