Hieronymus__, Dutch painter (5)
I believe the answer is:
bosch
(Other definitions for bosch that I've seen before include "Dutch painter of The Garden of Earthly Delights, d. 1516" , "Dutch painter, Hieronymus, d. 1516" , "Fantastic Dutch artist" , "Hieronymous -----, Dutch painter" , "Dutch painter known especially for "The Garden of Earthly Delights"" .)