The Story of St George - the Return of the Princess

This work is part of a set of four drawings attributed to Rosa Corder after stained glass windows by Dante Gabriel Rossetti . The head of St George is said to have been modelled on Charles Augustus Howell (1840-90), a rather controversial associate of the Pre-Raphaelites. Corder was an associate and mistress of Howell from 1873, she is considered by many to have been a forger of Rossetti drawings.

http://www.preraphaelites.org/the-collection/1905p205/the-story-of-st-george-the-return-of-the-princess/

Charles Augustus Howell and Rosa Corder

[Charles Augustus Howell, drawn by Rossetti]
[Howell's lover Rosa Corder depicted by Whistler]
[A caricature of Howell eavesdropping, while Rosa Corder forges Rossetti drawings (from Rossetti and his Circle by Max Beerbohm)]

If anyone wants to write a good PRB mystery look no futher than:

http://en.wikipedia.org/wiki/Charles_Augustus_Howell