Description:    

Full-length standing portrait of the Duchess of Portland (1863-1954) leaning against a white marble mantlepiece. She wears a white satin gown with a standing collar and a red velvet cloak. Strands of pearls festoon across her corsage from a pearl brooch. She wears bracelets and rings and holds a book in her left hand.

(SIRIS)

Sargent had painted her husband the previous year:

Philip Alexius de Laszlo 

British portrait painter, 1869-1937

Notes:

Bibliography:    

Ormond, Richard and Elaine Kilmurray, "John Singer Sargent: complete paintings; volume 3, The later portraits," New Haven, CT: Yale University Press, 2003, no. 414.

McKibbin, David, "Sargent's Boston," Boston, Museum of Fine Arts, 1956.

Illustration:    

Ormond, Richard and Elaine Kilmurray, "John Singer Sargent: complete paintings; volume 3, The later portraits," New Haven, CT: Yale University Press, 2003, pg. 69.