"Guernica" painter Pablo (7)
I believe the answer is:
picasso
(Other definitions for picasso that I've seen before include "Spanish artist who emigrated to France, d. 1973" , "As cop is a Spanish painter" , "Pablo . . . . . . ., great Spanish artist of 20th century" , "Pablo . . . . . . ., extraordinary 20th century artist" , "Spanish painter, d. 1973" .)