Aert De Gelder ( 1645 - 1727 ) was a Dutch painter. Aert De Gelder s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 8319.47 USD for Portrait of a young man in 2005 to 237579.46 USD for Judah and Tamar in 2006 , based on the size and medium of the artwork.