Hypnos Ancient Greek mythological spirit

Hypnos was the god or personified spirit (daimon) of sleep. He dwelt in Erebos, the land of eternal darkness beyond the gates of the rising sun, and rose into the sky each night in the train of his mother Nyx (Night). Hypnos was often paired with his twin brother Thanatos (Peaceful Death), and the Oneiroi (Dreams) were his brothers or sons.