Pluto (mythology) from the 5th century BC onward the name Hades was increasingly reserved for the underworld as a place. Neither Hades nor Pluto was one of the traditional Twelve Olympians, and Hades seems to have received limited cult, perhaps only at Elis, where the temple was opened once a year. During the time of Plato, the Athenians periodically honored the god called "Plouton" with the "strewing of a couch" "(tên klinên strôsai)". At Eleusis, "Plouton" had his own priestess. Pluto was worshipped with Persephone as a divine couple at Knidos, Ephesos, Mytilene, and Sparta as well as at Eleusis, where they
Ancient Mesopotamian underworld originally meant "canal inspector of An" and he may be merely an alternative name for Ennugi. The son of Ereshkigal and Gugalanna is Ninazu. In "Inanna's Descent into the Underworld", Inanna tells the gatekeeper Neti that she is descending to the underworld to attend the funeral of "Gugalanna, the husband of my elder sister Ereshkigal". During the Akkadian Period ( 2334 – 2154 BC), Ereshkigal's role as the ruler of the underworld was assigned to Nergal, the god of death. The Akkadians attempted to harmonize this dual rulership of the underworld by making Nergal Ereshkigal's husband. Nergal is the deity