Ernest Pierre Guerin ( 1887 - 1952 ) was a French painter. Ernest Pierre Guerin s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 3075.18 USD for Notre Dame de la Joie, Bretagne in 2004 to 8833.44 USD for Notre-Dame de Penhors, Bretagne in 2016 , based on the size and medium of the artwork.