Board Thread:News and Announcements/@comment-6533159-20151015224111/@comment-24891101-20151021014025

Yang's mother was on a team with Taiyang, Qrow, and Summer. This is explicitly mentioned in canon. Raven is on said team. QED

(Calm down, Chish. It's alright. I took care of it for you. Don't go off and rant, now.)