The Erinyes (/ɪˈrɪni.iːz/ ih-RI-nee-eez; Ancient Greek: Ἐρινύες, sg. Ἐρινύς Erinys), also known as the Eumenides (Εὐμενίδες, the "Gracious ones"), are chthonic goddesses of vengeance in ancient Greek religion and mythology. A formulaic oath in the Iliad invokes them as "the Erinyes, that under earth take vengeance on men, whosoever hath sworn a false oath". Walter Burkert suggests that they are "an embodiment of the act of self-cursing contained in the oath". Their Roman counterparts are the Furies, also known as the Dirae. The Roman writer Maurus Servius Honoratus (c. 400 AD) wrote that they are called "Eumenides" in hell, "Furiae" on Earth, and "Dirae" in heaven. Erinyes are akin to some other Greek deities, called Poenai.
According to Hesiod's Theogony, when the Titan Cronus castrated his father, Uranus, and threw his genitalia into the sea, the Erinyes (along with the Giants and the Meliae) emerged from the drops of blood which fell on the Earth (Gaia), while Aphrodite was born from the crests of sea foam. Apollodorus also reports this lineage. According to variant accounts, they are the daughters of Nyx ('Night'), while in Virgil's Aeneid, they are daughters of Pluto and Nox (the Roman name for Nyx). In some accounts, they were the daughters of Eurynome (a name for Earth) and Cronus, or of Earth and Phorcys (i.e., the sea). In Orphic literature, they are the daughters of Hades and Persephone.