Gwen (mary) John (after) ( 1876 - 1939 ) was a British painter. Gwen (mary) John (after) s works have been put up for auction numerous times, with realized prices varying from 13.97 USD for Nude study in 2004 to 198.59 USD for Portrait of a lady in a striped dress in 2007 , based on the size and medium of the artwork.