Board Thread:Speculation House/@comment-4606441-20141024012020/@comment-30764484-20141101054804

Again, the legit Monty account here gave Qrow's last name as Branwen, a couple weeks short of a year ago. Raven Branwen is Qrow's sister and Yang's mother.

And I seriously doubt they would reveal her face, which isn't a copy of Yang's, then make her look different later, that's just projecting your own desires/hopes that she would have looked different than she does.