Johann Jacob Dorner ( 1741 - 1813 ) was a German painter. Johann Jacob Dorner s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 74.24 USD for Die Blockhütte am Wehr in 2007 to 8778.18 USD for The Virgin and Child in 2009 , based on the size and medium of the artwork.