William Brocas ( 1794 - 1868 ) was a British painter. William Brocas s works have been put up for auction numerous times, with realized prices varying from 41.21 USD for Portrait of a Gentleman, three quarter length standing in 2007 to 268.55 USD for Portrait of Maria Shaw, Daughter of Sir Frederick Shaw in 2016 , based on the size and medium of the artwork.