William Barnett Spencer ( 1810 - 1884 ) was a British painter. William Barnett Spencer s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 2488.72 USD for The Battle of Trafalgar in 2004 to 6100 USD for The British four-master Vanduara at sea under full sail in 2010 , based on the size and medium of the artwork.