All my life my parents have referred to a baby naming book which states "Nina" to originally be a Babylonian reference to the 'Mythical Goddess of the Sea' - all other adaptations appear from the mid-century onwards... Happy hunting :)
Nina may mean: = "nice eyes" in Hindu = "mother" in Swahili = "huge, excellent" in Native American language = "friendly" in Arabian = "flower" in Old Greek.