15a. Zoey
A modern variety of the Greek-derived name Zoe, Zoey is a modern variant of the spelling Zoe, which is actually a translation of the Jewish Greek-derived name Eve. Zoey is a nickname that means “life.” As far as is known, the first woman to have this name, with the spelling Zo, would be the Byzantine empress Zo Porphyrogenita, who reigned during the fourth century.
15b. Aubrey
Aubrey is a Norman French variant of the Germanic given name Alberic, which is composed of the parts alf, which means “elf,” and ric, which means “strength.” The name Aubrey was originally spelled Aubrée and did not stem from the same derivation as the name Aubrey, which was derived from the Germanic names Alborada and Alberta instead. Originally, the name Aubrey was reserved for boys, but the Americanization of the name made it popular among girls and women alike.