Johann Gottfried Schadow ( 1764 - 1850 ) was a German painter. Johann Gottfried Schadow s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 4901.96 USD for Königin Luise von Preußen in 2005 to 12860.91 USD for Achtzehn Bildnisköpfe zur Künstlerreise in 2008 , based on the size and medium of the artwork.