In sumerian mythology :
First called Sud then Ninlil, she is the daughter of Nammu and An.
She lived in Dilmun with her family.
She was raped by her brother and future husband : Enlil.
She got a baby-boy from that union : Nanna, the future moon god.
After her death, she became the goddess of the air, like her husband Enlil.

link : http://www.faqs.org/faqs/mythology/assyrbabyl-faq/