Umberto Ongania ( 1800 - ) is an Italian painter. Umberto Ongania s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 42.06 USD for A view of Venice from San Giorgio Maggiore in 2003 to 2406.55 USD for Der Markusplatz in Venedig in 2007 , based on the size and medium of the artwork.