the personification and god of sleep, the Greek Hypnos, is described by the ancients as a brother of Death (θάνατος), and as a son of Night (Hes. Theog. 211, &c.; Verg. A. 6.277). At Sicyon there was a statue of Sleep surnamed ἐπιδώτης, the giver (Paus. 2.10.2). In works of art Sleep and Death are represented alike as two youths sleeping or holding inverted torches in their hands. (Comp. THANATOS.)
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890