Algernon Seymour (1684–1750), Earl of Hertford, later (from 1748) 7th Duke of Somerset. On loan from the Egremont Private Collection, owned by Baron Leconfield and Egremont of Petworth House, displayed at Petworth House, West Sussex, England (National Trust)
<bdi><a href="https://en.wikipedia.org/wiki/en:John_Vanderbank" class="extiw" title="w:en:John Vanderbank"><span title="British artist (1694–1739)">John Vanderbank</span></a>
</bdi>
circa 1700 <div style="display: none;">date QS:P571,+1700-00-00T00:00:00Z/9,P1480,Q5727902</div> (Catalogue entry states "1690s", sitter only aged 6 in 1690, appears here aged at least 16)
<a rel="nofollow" class="external text" href="https://artuk.org/discover/artworks/algernon-seymour-16841750-earl-of-hertford-later-7th-duke-of-somerset-219588">Art UK</a>