William Grimaldi ( 1751 - 1830 ) was a British painter. William Grimaldi s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 252.63 USD for Arthur Wellesley in 2006 to 8185.45 USD for PORTRAIT OF SIR JOSHUA REYNOLDS, P.R.A. (1723-1792) in 2010 , based on the size and medium of the artwork.