François Guérin ( 1751 - 1791 ) was a French painter. François Guérin s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1.7 USD for LES VESTALES ENTRETENANT LE FEU SACR√â in 2005 to 11875 USD for The Music Lesson (recto); A Girl sewing (verso) in 2011 , based on the size and medium of the artwork.