John Singleton Copley ( 1738 - 1815 ) was a painter. John Singleton Copley s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 41825 USD for Portrait of Mary Clarke, Mrs. Samuel Barrett in 2004 to a remarkable record 3376000 USD for MRS. THEODORE ATKINSON, JR. (FRANCES DEERING WENTWORTH) in 2005 , based on the size and medium of the