William Sidney Mount (after) ( 1807 - 1868 ) was an American painter. William Sidney Mount (after) s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 225 USD for portrait of gentleman in 2004 to 1800 USD for THE MOWER (ALTERNATE TITLE LONG ISLAND FARM) in 2017 , based on the size and medium of the artwork.