Gilgamesh

Origin: Akkadian, Sumerian

Meaning: though the meaning is not clear, I’ve seen it listed as meaning something to the effect of “the ancestor is a young man” or “may the (mature) man become a young man again”.

Variants: Bilgamesh (Sumerian); Gilgamos (Greek)

The eponymous hero of the Epic of Gilgamesh, an epic poem believed to be the oldest surviving work of Western literature; it’s believed that he was based on a real historical figure.

Nanaya

Origin: Sumerian

Meaning: It could possibly be related to Inanna, which might be derived from Sumerian (n)-in-an-na  which could hold the meaning “lady of the heavens” though that’s not certain.

Another source (Llewellyn’s Complete Book of Names by K.M. Sheard) lists it as a reduplication of na “human being” and “incense” + “water”.

Nanaya is a Sumerian goddess worshipped by both the Sumerians and Akkadians, being the goddess of sex and war. She is closely associated with the goddesses Inanna and Ishtar, all of whom share similar functions. According to Wikipedia, Nanaya later became synchronized with the Babylonian goddess Tashmetum.

Variants: Nanâ, Nanãy, Nanaja, Nanãja, or Nanãya, Nanaia