Jean-Baptiste-Camille —, French artist whose works include 1871's The Marsh at Arleux (5)
I believe the answer is:
corot
(Other definitions for corot that I've seen before include "Fr. landscape artist, d. 1875" , "French artist" , "French landscape painter, 1796-1875" , "18c French painter" , "C19 French landscape painter" .)