"The Sleep of Reason Produces Monsters" artist (4)

I believe the answer is:

goya

(Other definitions for goya that I've seen before include "Old master" , "Spanish painter, d. 1828" , "Artist, died at Bordeaux, 1828" , "He painted Wellington" , "Great Spanish painter who depicted horrors of war" .)

I've seen this clue in The New York Times.

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