ERIS, in Greek mythology, a sister of the war-god Ares (Homer, Iliad, iv. 440), and in the Hesiodic theogony (225) a daughter of Night. In the later legends of the Trojan War, Eris, not having been invited to the marriage festival of Peleus and Thetis, flings a golden apple (the "apple of discord") among the guests, to be given to the most beautiful. The claims of the three deities Hera, Aphrodite and Athena are decided by Paris in favour of Aphrodite, who as a reward assists him to gain possession of Helen (Hyginus, Fab. 92; Lucian, Charidemus, 17). Hesiod also mentions (W. and D. 24) a beneficent Eris, the personification of honourable rivalry. In Virgil (Aeneid, viii. 702) and other Roman poets Eris is represented by Discordia.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)