Caravaggio painting in the Uffizi Gallery, Florence (7)
I believe the answer is:
bacchus
(Other definitions for bacchus that I've seen before include "Greek god of boozing" , "Another name for Dionysus, Greek god of drink" , "Greek god of wine, also called Dionysus" , "Greek god of drink, also called Dionysus" , "Greek god of booze" .)