 Utu is usually the son of Nanna, the god of the moon, and his wife, Ningal, but is sometimes also described as the son of An or Enlil.His wife was the goddess Sherida, later known in Akkadian as Aya.Sherida was a goddess of beauty, fertility, and sexual love, possibly because light was seen as inherently beautiful, or because of the sun's role in promoting agricultural fertility.