Alphonse Dupont ( 1795 - 1833 ) was a French painter. Alphonse Dupont s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 57.09 USD for Landscape study in 2005 to 1268.96 USD for Ruines d'un théâtre romain à Naples in 2008 , based on the size and medium of the artwork.