Nanna, full moon, Mesopotamian (Sumerian) [Iraq], was a major deity within the Sumerian pantheon, probably originating in pre-agricultural times. He was the tutelary god of Ur, the firstborn son of Enlil. His consort is Ningal and children were Utu, Iskur, and Inanna. During the Third Dynasty of Ur the New Year akitu festival was performed in his honor. He was considered to light up the night, to measure time, and to bring fertility. He is depicted as traveling in a carriage across the sky bringing light to the darkness. A.G.H.
Jordan, Michael, Encyclopedia of Gods, New York, Facts On File, Inc. 1993, p. 177