Jpg: Friend of the JSS Gallery
From: Matt Davies
Lady Diana Manners is the daughter of the Duke and Duchess of Rutland. In 1919 she married Duff Cooper (later Viscount Norwich).
In June of 1916 the
drawing was exhibted
with the the Royal Society of Portrait Painters at the Grafton
which was reviewed in the Daily
Mail, 3 June 1916.
One source on this image is from the book John Singer Sargent and the Edwardian Age, by James Lomax and Richard Ormond, an exhibit catalog from the Leeds Galleries, 1979.