Henri de Toulouse-Lautrec.
Dressage des nouvelles, par Valentin le Désossé / Training of the New Girls by Valentin "the Boneless" (Moulin-Rouge).
1889-90. Oil on canvas.115 x 150 cm. The Philadelphia Museum of Art, Philadelphia, PA, USA. More.
(1843-1907) was a wine trader who had a passion for and great skill at dancing. Under the pseudonym Valentin le Desosse
, or Valentin the Boneless, he performed in Paris' nightclubs. He always viewed dancing as a hobby, and never accepted money for it.
See also: Henri de Toulouse-Lautrec. La Goulue and Valentin, Waltz.