Achille Etna Michallon (after) ( 1796 - 1822 ) was a French painter. Achille Etna Michallon (after) s works have been put up for auction numerous times, with realized prices varying from 825.94 USD for Un jeune berger in 2005 to 1500 USD for Ruins in the Roman campagna in 2009 , based on the size and medium of the artwork.