In Sumerian mythology, Ninsun or Ninsuna ("lady wild cow") is a goddess, best known as the mother of the legendary hero Gilgamesh, and as the tutelary goddess of Gudea of Lagash. Her parents are the deities Anu and Uras.
In the Epic of Gilgamesh, Ninsun is depicted as a human queen who lives in Uruk with her son as king. Since the father of Gilgamesh was former king Lugalbanda, it stands to reason that Ninsun procreated with Lugalbanda to give birth.
Also in the Epic of Gilgamesh, Ninsun is summoned by Gilgamesh and Enkidu to help pray to the god Utu to help the two on their journey to the Country of the Living to battle Humbaba.
Ninsun is called "Rimat-Ninsun", the "August cow", the "Wild Cow of the Enclosure", and "The Great Queen". In the Tello relief (the ancient Lagash, 2150 BC) her name is written with the cuneiform glyphs as: DINGIR.NIN.GUL where the glyph for GUL is the same for SUN2. According to John Halloran's Sumerian Lexicon, the meaning of GUL is "enormous" and "evil" but also the verb "to wreck, destroy utterly". The meaning of SUN2 is attested as "cow".