Perseus (constellation) may be derived from the Babylonian Old Man (MUL.SHU.GI) constellation, then associated with East in the MUL.APINan astronomical compilation dating to around 1000 BCE. In Greek mythology, Perseus was the son of Danaë, who was sent by King Polydectes to bring the head of Medusa the Gorgon — whose visage caused all who gazed upon her to turn to stone. Perseus slew Medusa in her sleep, and Pegasus and Chrysaor appeared from her body. Perseus continued to the realm of Cepheus whose daughter Andromeda was to be sacrificed to Cetus the sea monster. Perseus rescued Andromeda from the monster by
Medusa Rondanini to Napoleonic Paris, it was the "Medusa Rondanini" that served as the model for the gorgon's head in Perseus' outstretched hand. The "Medusa Rondanini" may be a Roman copy of a classical work of the fifth century BC, a model attributed to one or another Athenian sculptor of the age of Phidias. Alternatively, it may have been modeled after a classicising Hellenistic work of the late fourth century BC. If it is of the fifth century, Janer Danforth Belson has pointed out, it is the first of the "beautiful gorgoneion" type to appear in Greek art by more than a