Hypnos.

Hypnos (Ὕπνος,) was a god of sleep in Ancient Greece. His father was Erebus, god of darkness, his mother was Nyx, goddess of night. Also, Hypnos had severa siblings, such as: Thanatos, Nemesis, Keres, and etc.

His symbols were poppy and Cottonwood. Hypnos lived in the underworld. His spouse was Pasithea. They had several children. Morpheus was a relative of Hypnos.

In Greek mythology there are many myths and legends about this god. Artists and sculptors created different paintings and statues of a Greek god of sleep.

Source of image:

https://www.shutterstock.com/es/image-vector/hypnos-thanatos-twin-greek-mythology-gods-1296793756



Source of image:

https://www.shutterstock.com/es/image-vector/hypnos-vintage-engraved-illustration-drawing-1446915428



Source of image:

https://www.shutterstock.com/es/image-photo/floor-mosaic-colored-stones-god-sleep-1188002947