La Comtesse Jacques De Ganay was a promrnant member of Parisian high society.She is mentioned in Prouts' account (under the pen name of Tout-Pais) of "A Literary Feast At Versailles" which was attended by just about everyone in Sargent's world:
Artists such as Giovanni Boldini, J.J. Tissot, Jean Beraud, Paul Helleu and Léon Delafosse. Along with social celebrities such as Dr. Pozzi, Judith Gautier and the actress Sarah Bernhardt.
My gratitude to Stephanie for letting me know about this painting on the net.
As of 2/24/2002 it was offered for sale at Mark Borghi Fine Art Inc.