Board Thread:General Discussion/@comment-3257939-20131104060426/@comment-10390252-20131120093214

I'm sticking with my new theory that there is some kind of weird naming convention in Vytal at least and possibly all of human culture in Remnant where the first child bears the name of the father and the second of the mother. So, Yang has their father's surname and Ruby their mother's.

This would enable them to be full sisters and still have different names. This can also be attached onto my theory that The Transient Princess (the woman Yang was looking for in her trailer) = Cinder and has some kind of familial connection with Yang and Ruby - either a fallen Summer Rose and (I'm starting to like this theory more) is Summer's twin sister and used to be on the same team before Summer's death drove her mad and made her go Dark.

Just a Reminder: Team SAGE

S - Summer Rose

A - Autumn Rose (now Cinder Fall)

G - Glynda Goodwitch

E - As-yet-unrevealed character who may have died on the same mission as Summer or is Evan Long, the girls' father