Willem Bartsius ( 1612 - 1657 ) was a Dutch Golden Age painter. Willem Bartsius s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 37173.62 USD for ABRAHAM PLEADING WITH SARAH ON BEHALF OF HAGAR in 2007 to 366569.98 USD for Joueur de luth in 2014 , based on the size and medium of the artwork.