IN ONE STORY, SHE WAS SENT BY "HERA" TO DELAY "HERACLES'S" BIRTH SO THAT ANOTHER CHILD IN THE BLOODLINE OF "PERSEUS" WOULD BE BORN FIRST AND, THUS, CLAIM THE TITLE OF "KING OF ARGOS." CONSEQUENTLY, "EURYSTHEUS" WAS BORN BEFORE" HERACLES" AND BECAME" HERACLES'S" EARTHLY MASTER.
Although She never played a very large role in Greek mythology She was, nonetheless, a major cult goddess with a large number of shrines located throughout Greece." Eileithyia" was invoked by women in labor, to further the birth and ease the pain of labour.
Credit: pagan-wiccan.blogspot.com