The French chess master, Jules Arnous de Rivière, (1830-1905); Post #136/2025--chess photograph
This is a man who was a contemporary of Morphy. The set is a French Regency; the clock is similar to one for sale from the Allan Troy estate on eBay:
The photograph is provided by the amazing Sarah Beth Cohen, who appended this other illustration, of Morphy playing de Rivière:
Gary Kenworthy, a poster on Sarah Beth’s Facebook page, added this odd tidbit:
He married 27 October 1858 to Joséphine de Coulhac Mazérieux (1834–1921) and had three children: William Arnous-Rivière (1860–1904), Hélène Arnous-Rivière (1862–?) and Jacques Arnous-Rivière (1874–1919). Hélène Arnous-Rivière married Baron Christian-Hubert von Pfeffel; her great-grandson is British politician Stanley Johnson, father of Boris Johnson.