Friedrich Alois Schonn ( 1826 - 1897 ) was an Austrian painter. Friedrich Alois Schonn s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 21191.25 USD for Marketers in Constantinople in 2004 to 98981.52 USD for Le retour du vignoble in 2005 , based on the size and medium of the artwork.