Nanna is the Mesopotamian moon god and the consort of Ningal. He is one of the Annunaki is therefore counted among the most powerful gods of the Mesopotamian pantheon.
His wife is Ningal, with whom he has three children: Utu, Inanna, and Ereshkigal. Then again, this is Mesopotamian mythology, so life is complicated. His children are sometimes referred to as having different fathers.