Greek mythology: a goddess of the moon. Greek selene "moon" (Lesbian selanna) is from selas "light, brightness (of heavenly bodies)."
Selene, Kate Beckinsale's character, a Death Dealer, in the Underwold movie franchise
The birth name of Cinder, main character of MarissaMeyer's Lunar Chronicles book series.
"The heathenish given name of this young woman was pronounced as Say-lay-nay by herself and her father; Aaron later compromised as Say-lane; most people, including the Bois missionaries, called her See-lean. That it was an appellation of the swift moon goddess (something that Aaron never knew and Selene may not have known) was not too unsuitable." [SinclairLewis, "The God-seeker," 1949]