Utu is the Sumerian Sun god. Utu is the son of Nammu and An. Nanna and Ningal/Sin Utu is the son of Nanna and Ningal, the twin brother of the goddess Inanna and the god of the Sun and of Justice. Cited from Websote: Twin Myths Nanna and Ningal have three children Utu Hadad (Ishkur) Inanna Sumerian Utu Sun,Fertility, Judgement and Law-giving Akkadian Shamash The wife of Utu is Sherida or Aya (Dawn) Light that All Sees, and thus regarded as a god of truth, justice, and right