William Grimaldi (after) ( 1751 - 1830 ) was a British painter. William Grimaldi (after) s works have been auctioned off multiple times, with realized prices varying according to the size and medium of the artwork, for instance of 1246.32 USD for Richard Brinsley Sheridan (1751-1816), in royal blue coat with brass buttons, yellow waistcoat, white cravat, powdered hair in 2005