Bronze head of Hypnos (god of sleep), 1st - 2nd century CE. Copy of an Hellenistic original, found at Civitella d'Arno (near Perugia, Italy). Now in the British Museum, London.
Hypnos was the son of the goddess Nyx (the deity of the Night) and Erebus (the deity of Darkness). His wife, Pasithea (the deity of Hallucinations), was one of the youngest of the Graces and was promised to him by Hera. His sons were Morpheus (the personification of Dreams), Phobetor (the personification of Nightmares), Phantasos (the personification of inanimate objects in prophetic dreams) and Ikelos (the personification of people seen in prophetic dreams).