Guillam Dubois ( 1610 - 1680 ) was a Dutch painter. Guillam Dubois s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 2854.42 USD for Kutschentransport durch Landschaft. in 2005 to 12351.7 USD for A LANDSCAPE WITH FIGURES ON A TREE-LINED PATH, A WINDMILL BEYOND in 2006 , based on the size and medium of the artwork.