John Boydell ( 1719 - 1804 ) was a British painter. John Boydell s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 84.23 USD for A view of Westminster Bridge and Hanover Square in 2004 to 4093.47 USD for AN HISTORY OF THE RIVER THAMES in 2005 , based on the size and medium of the artwork.