User blog comment:Project Predacon/Volume 2: Post Credits Scene Analysis/@comment-50.197.190.126-20141031000952

I don't understand your "she can't be Yang's mother because of her surnanme" point. I mean, that seems like one of the main reasons why she IS Yang's mother. If Raven and Qrow have the same last name, then more likely than not they're brother and sister, making Qrow, surprise surprise, Yang's uncle. If anything, Raven's last name being Branwen argues for the point instead of against it.