William P Sherlock ( 1780 - 1821 ) was a British painter. William P Sherlock s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 267.41 USD for Fishing in a river in 2004 to 7983.06 USD for Shipping lying in the Thames below Old London Bridge in 2005 , based on the size and medium of the artwork.